WO2005041151A2

WO2005041151A2 - Tobacco product labeling system

Info

Publication number: WO2005041151A2
Application number: PCT/US2004/029953
Authority: WO
Inventors: Susan Reich
Original assignee: Vector Tobacco Ltd.
Priority date: 2003-10-02
Filing date: 2004-09-13
Publication date: 2005-05-06
Also published as: WO2005041151A3; US20060237024A1; US20060243290A1; EP1684603A2

Abstract

The disclosed invention relates to visual content indicators of a tobacco product. More specifically, the invention includes labeling systems that provide at least one visual indicator of a tobacco product, methods for using the systems, and tobacco products that display one or more visual indicators of content.

Description

TOBACCO PRODUCT LABELING SYSTEM

Field of the Invention [0001] The present invention relates to visual indicators that denote the presence or content level of one or more substances found in a tobacco product. More specifically, tobacco product labeling systems that provide at least one visual content indicator of a tobacco product, methods for using these systems, and tobacco products that display one or more visual indicators of content are disclosed.

Background of the Invention [0002] Tobacco product packaging comes in a variety of forms. Typically the packaging is directed to branding, where the packaging provides visual clues to consumers allowing them to recognize their preferred product. In many cases, these visual clues are trademarks or trade dress associated with a particular manufacturer. [0003] Labeling of cigarettes is discussed, for example, in U.S. Patent No. 4,700,725. Methods of marking cigarette papers are also known. For example, see U.S. Patent No. 4,319,587, which provides a graduated or labeled cigarette paper that allows a smoker to determine how much a cigarette to consume. Other means of labeling cigarettes include a bar code that can be scanned with a laser (U.S. Patent No. 5,377,697), a tactile indicator (U.S. Patent No. 4,699,158), and coding of cigarettes by means of perforations in the filter (U.S. Patent No. 4,766,911). One drawback of these labeling systems is that they can be very complicated and thus make it difficult for a tobacco user to decipher. For example, the labeling system provided in U.S. Patent No. 5,377,697 requires the use of a laser scanner to read. In addition, the system in U.S. Patent No. 4,766,911 uses small perforations to code cigarettes, thereby allowing the manufacturer to trace and identify these cigarettes. Accordingly, there is a need in the art for a labeling system that denotes the contents of a tobacco product in a way that is readily and quickly identifiable to a tobacco user.

Summary of the Invention [0004] Some embodiments of the invention relate to cigarettes labeled with a visual content indicator, wherein the visual content indicator denotes a content level of one or more substances contained within the cigarette. In one aspect of this embodiment, the visual content indicator denotes a pH content level, a nicotine content level, one or more additive levels, one or more carcinogen levels, a carbon monoxide level, a nitric oxide level, a tar content level, or one or more tobacco-specific nitrosamine (TSNA) content levels of the cigarette. In another aspect of this embodiment, the content level is selected from the group consisting of a base content level, a reduced content level, and an essentially free content level. [0005] Other embodiments of the invention provide for cigarettes labeled with a base nicotine content indicator. In a specific aspect of the invention, the cigarette labeled with the base nicotine content indicator contains approximately 0.6mg nicotine, although any quantity of nicotine may be present and indicated in the cigarette or other tobacco product. An example of a particular base nicotine content indicator is a ring or bar on a cigarette paper. [0006] Some embodiments of the disclosed invention relate to a cigarette labeled with a reduced nicotine content indicator. In one aspect of this embodiment, the reduced nicotine content indicator denotes the presence of approximately 0.3mg nicotine in the labeled cigarette. The exact quantity of nicotine present and indicated in the cigarette or other tobacco product is not essential to the invention, so long as the content of nicotine in the reduced nicotine product is less than that present in the base nicotine product. An example of a particular reduced nicotine content indicator is two rings or two bars on a cigarette paper. [0007] Another embodiment of the invention relates to a cigarette labeled with an essentially nicotine-free content indicator. In one aspect of this embodiment, the essentially nicotine-free content indicator denotes the presence of approximately 0.05mg nicotine in the labeled cigarette. The exact quantity of nicotine present and indicated in the cigarette or other tobacco product is not essential to the invention, so long as the content of nicotine in the essentially nicotine-free nicotine product approaches less than one third of that found in a product labeled with a reduced content indicator. For example, an essentially nicotine-free content indicator can denote the presence of approximately 0.05mg of nicotine in the labeled product. An example of a particular essentially nicotine-free content indicator is three rings or three bars on a cigarette paper. [0008] Another embodiment of the invention relates to a cigarette having a visual content indicator denoting the content of one or more carcinogens selected from the group consisting of 4-aminobiphenyl, benzene, cadmium, chromium, 2-naphthylamine, nickel, polonium- 210 (radon), vinyl chloride, acrylonitrile, benzo[α]pyrene, 1,3-butadiene, dibenz(a,h)anthracene, formaldehyde, N-nitrosodiethylamine, N-nitrosodimethylamine, acetaldehyde, benzo[/ ]fluoranthene, benzo[ ]fluoranthene, benzo[A;]fluoranthene, dibenz[α,Λ]acridine, dibenzfαJJacridine, 7H-dibenz[c,g]carbazole, dibenzo(α,z^')pyrene, dibenzo(α,/)pyrene, 1,1- dimethylhydrazine, hydrazine, indeno[l,2,3-crf]pyrene, lead, 5-methylchrysene, 4- (methylnitrosamino)-l-(3-pyridyl)-l-butanone (ΝΝK), 2-nitropropane, N-nitrosodiethanolamine, N- nitrosomethylethylamine, N-nitrosomorpholine, N'-nitrosonornicotine (ΝΝΝ), N- nitrosopyrrolidine, quinoline, ortho-toluidine, urethanechrysene, crotonaldehyde, Ν'- nitrosoanabasine (ΝAB), and Ν'-nitrosoanatabine (NAT). [0009] Another embodiment of the invention relates to a tobacco product labeling system. Typically the labeling system comprises a content indicator, wherein the content indicator denotes relative content levels of a tobacco product labeled with the content indicator, wherein the content indicator is applied to the tobacco product. In further embodiments, the content indicator is a non-alpha/numerical indicator. In particular embodiments, the tobacco product is labeled with a plurality of content indicators, wherein each indicator denotes the content of a different tobacco product component. In one aspect of this embodiment, the content indicator denotes a pH content level, a nicotine content level, one or more additive levels, one or more carcinogen levels, a carbon monoxide level, a nitric oxide level, a tar content level, or one or more TSNA content levels of a tobacco product. In another aspect, the content indicator is a nicotine content indicator selected from the group consisting of a base nicotine content indicator, a reduced nicotine content indicator, and an essentially nicotine-free content indicator. Typically, the reduced nicotine content indicator will appear on a tobacco product containing approximately half the nicotine of a tobacco product labeled with the base nicotine content indicator. Frequently, the essentially nicotine-free content indicator will appear on a tobacco product containing approximately one sixth the nicotine of a tobacco product labeled with the reduced nicotine content indicator. In various embodiments, the tobacco product labeling system is utilized to label a cigarette, a cigarette package, a carton of cigarette packages, tobacco gum and their wrappers and containers, tobacco lozenges and their wrappers and containers, snuff containers, and chewing tobacco containers. [0010] In another embodiment, the tobacco product labeling system is used to label a cigarette with a base nicotine content indicator. In one aspect of this embodiment, the cigarette labeled with the base nicotine content indicator contains approximately 0.6mg nicotine. The exact quantity of nicotine present and indicated in the cigarette or other tobacco product is not essential to the invention. An example of a base nicotine content indicator is a ring, stripe, or bar. [0011] Other embodiments of the invention provide for the tobacco product labeling system being used to label a cigarette with a reduced nicotine content indicator. In one aspect of this embodiment, the cigarette labeled with the reduced nicotine content indicator contains approximately 0.3mg nicotine. The exact quantity of nicotine present and indicated in the cigarette or other tobacco product is not essential to the invention, so long as the content of nicotine in the reduced nicotine product is less than that present in the base nicotine product. An example of a reduced nicotine content indicator is two rings, two stripes, or two bars. [0012] Another embodiment of the invention provides for the tobacco product labeling system being used to label a cigarette with an essentially nicotine-free content indicator. In one aspect of this embodiment, the cigarette labeled with the essentially nicotine-free content indicator contains approximately 0.05mg nicotine. The exact quantity of nicotine present and indicated in the cigarette or other tobacco product is not essential to the invention, so long as the content of nicotine in the essentially nicotine-free nicotine product approaches less than one third of that found in a product labeled with a reduced content indicator. An example of an essentially nicotine-free content indicator is three rings, three stripes, or three bars. [0013] Another embodiment of the invention relates to a method for labeling tobacco products. This method includes the steps of providing a system of labeling comprising a content indicator, wherein the content indicator denotes relative content of a tobacco product component in a tobacco product labeled with the content indicator and labeling the tobacco product with the content indicator that reflects the content of the tobacco product component in the tobacco product system of labeling. In certain embodiments, the content indicator is a non-alpha/numerical indicator. In other embodiments, an alpha/numerical indicator is used. [0014] In other embodiments, the tobacco product is labeled with a plurality of content indicators, wherein each content indicator denotes the content of a different tobacco product component. In certain embodiments the content indicator reflects the content of the tobacco product component in the tobacco product the system of labeling. In one aspect of this embodiment, the content indicator denotes a pH content level, a nicotine content level, one or more additive levels, one or more carcinogen levels, a carbon monoxide level, a nitric oxide level, a tar content level, or one or more TSNA content levels of the tobacco product. In another aspect of this embodiment, the content indicator is a nicotine content indicator selected from the group consisting of a base nicotine content indicator, a reduced nicotine content indicator, and an essentially nicotine-free content indicator. [0015] In one embodiment of the invention, the reduced nicotine content indicator appears on a tobacco product containing approximately half the nicotine of a tobacco product labeled with the base nicotine content indicator. An aspect of this embodiment provides that the essentially nicotine-free content indicator appears on a tobacco product containing approximately one sixth the nicotine of a tobacco product labeled with the reduced nicotine-level indicator. In this embodiment, the tobacco product is a cigarette, cigarette package, or cigarette carton. [0016] In another embodiment, a cigarette labeled with a base nicotine content indicator that denotes the presence of approximately 0.6mg nicotine in the labeled cigarette. The exact quantity of nicotine present and indicated in the cigarette or other tobacco product is not essential to the invention. An example of a base nicotine content indicator is a ring, stripe, or bar. [0017] In a further embodiment, a cigarette is labeled with the reduced nicotine content indicator that denotes the presence of approximately 0.3mg nicotine. The exact quantity of nicotine present and indicated in the cigarette or other tobacco product is not essential to the invention, so long as the content of nicotine in the reduced nicotine product is less than that present in the base nicotine product. An example of a reduced nicotine content indicator is two rings, two stripes, or two bars. [0018] Another embodiment of the disclosed invention provides for a cigarette labeled with the essentially nicotine-free content indicator. In an aspect of this embodiment, the cigarette labeled with the essentially nicotine-free content indicator contains approximately 0.05mg nicotine. The exact quantity of nicotine present and indicated in the cigarette or other tobacco product is not essential to the invention, so long as the content of nicotine in the essentially nicotine-free nicotine product approaches less than one third of that found in a product labeled with a reduced content indicator. An example of an essentially nicotine-free content indicator is three rings, three stripes, or three bars.

Brief Description of the Drawings [0019] FIGURE 1 shows a schematic representation of a cigarette.

Detailed Description of the Disclosed Invention [0020] The disclosed invention relates to visual indicators that indicate a content level of one or more substances present in a tobacco product. More specifically, the invention includes a tobacco product labeling system that provides a visual indication of the contents of a tobacco product, a method for using the system, and tobacco products that display one or more visual indicators of content. The visual indicators of content can be used to denote the presence or content level of a variety of ingredients or components in a tobacco product. The Visual Indicators of Content [0021] A wide variety of visual indicators can be used to provide an outward indication of one or more content levels of a tobacco product. In general, content indicators can denote whether a particular compound is actually present within a tobacco product. In more specific embodiments, content indicators can denote the amount or level of a compound present in a compound. In certain aspects, the amount or level of a compound can be indicated as a mass, a percentage of total mass of the tobacco product, a volume, or as a percentage of total volume of the tobacco compound. Further, the amount or level of a particular compound can be identified as a specific value, an approximate value, or as a range of values. [0022] In other embodiments content indicators can denote a tobacco product's composition of smokable material (e.g., tobacco blend) or composition of materials from which the tobacco product is manufactured (e.g., filter material or wrapping material). In other embodiments, the use of visual content indicators to denote a tobacco product's composition of materials is expressly excluded. In certain embodiments, the content indicators denote the presence or level of one or more particular chemical compounds, h more specific embodiments, denoted chemical compounds can include compounds whose presence or content levels have not been traditionally indicated on a tobacco product. Examples of such compounds include nicotine and TSNAs. [0023] In one aspect of the invention, the content indicator can be alpha/numerical. Alpha/numeric indicators of content include letters, numbers, or other symbols, such as punctuation marks and mathematical symbols. In some embodiments, numbers, such as 1, 2, and 3, can be used as visual alpha/numeric indicators of content. In certain embodiments the alpha/numeric indicators can include, for example, only numbers, only letters, only punctuation marks, or only mathematical symbols. In other embodiments the alpha/numeric indicator can include some combination of the four or other alpha/numeric characters. For example, the alpha/numeric indicator can include a combination of letters, numbers and mathematical symbols. As another example, a combination of letters, numbers, mathematical symbols, and punctuation marks can be used as an alpha/numeric indicator. [0024] In other embodiments, non-alpha/numeric indicators can be used as a content indicator. Non-alpha/numeric indicators of content include non-alpha/numeric symbols, such as patterns, lines, waves, dotted bands, colors, and the like. Graphics, such as pictures or images are also included under the rubric of non-alpha/numeric indicators of content. In some embodiments, rings, geometric symbols, colors, stripes, bars, shades of colors, or combinations thereof can be used as non-alpha/numeric visual indicators of content. For example, in some embodiments, a single ring can be used to indicate the presence of a base content level of a particular component of a tobacco product. Two rings can be used to indicate the presence of a reduced content level of the particular component of the tobacco product. Three rings can be used to indicate that the labeled product is essentially free of the particular component of interest. In certain embodiments, the rings are imprinted on the tobacco product. [0025] In another embodiment, tobacco products with visual indicators denoting a base content level, a reduced content level and an essentially free content level can be used as part of a tobacco-use cessation program. In one example, these content indicators can denote the level of nicotine in a tobacco product, such as a cigarette. A subject who wishes to stop using tobacco can start with a tobacco product having a particular base nicotine content indicator. After a certain time period, the user can begin using a tobacco product with a reduced nicotine content indicator. The tobacco user can then use a tobacco product having an essentially nicotine-free content indicator. After a certain period, the tobacco user can stop using tobacco products altogether. In another embodiment, a tobacco user can start the tobacco-use cessation program by first using a tobacco product having a reduced nicotine content indicator, and then move to a tobacco product having an essentially nicotine-free content indicator, before quitting altogether. Tobacco-use cessation programs are provided in detail in U.S. Provisional App. 60/475,945, entitled "Method of Reducing the Harmful Effects of Orally Transdermally Delivered Nicotine," filed on June 4, 2003, U.S. Provisional Application No. 60/371,635, entitled "Tobacco Having Reduced Nicotine and Nitrsoamines," filed on April 9, 2002, and U.S. Provisional Application No. 60/486,875, entitled "Tobacco Products Containing Low Nicotine Tobacco and Nicotine Replacement Compounds," filed on July 10, 2003 (attorney docket No. VTOB.273PR), all of which are hereby incorporated by reference in their entireties. Visual indicators can be used with these programs and other tobacco- use cessation programs. [0026] In more specific embodiments, a tobacco product with a base nicotine content indicator can contain approximately 0.6mg of nicotine. In other embodiments, the base nicotine tobacco product can contain approximately l l.Omg, lO.Omg, 9.0mg, 8.0mg, 7.0mg, 6.0mg, 5.0mg, 4.0mg, 3.0mg, 2.0mg, l.Omg, or 0.5mg of nicotine, for example. In a particular embodiment, a tobacco product with a reduced nicotine content indicator can contain approximately 0.3mg of nicotine. In other embodiments, the reduced nicotine tobacco product can contain approximately 10.9mg, lO.Omg, 9.0mg, 8.0mg, 7.0mg, 6.0mg, 5.0mg, 4.0mg, 3.0mg, 2.0mg, l.Omg, 0.5mg, 0.4mg, 0.2mg, or 0.15mg of nicotine, for example. In another embodiment, a tobacco product with an essentially nicotine-free content indicator contains no more than 0.05mg of nicotine. In other embodiments, the essentially nicotine-free tobacco product can contain no more than approximately l.Omg, 0.9mg, 0.8mg, 0.7mg, 0.6mg, 0.5mg, 0.4mg, 0.3mg, 0.2mg, 0.15mg, or O.lmg of nicotine, for example. [0027] In other embodiments, the number of non-alpha/numeric symbols can be constant while different colors, shading, or patterns can be used to visually indicate the content of a particular additional component of a tobacco product. For example, a single ring can be placed on a tobacco product to indicate nicotine content while the ring can be presented in different colors to indicate content levels of another ingredient in the tobacco product such as, for example, presence or absence of a flavorant such as menthol. [0028] Various combinations of visual content indicators can also be used to provide content information regarding a particular tobacco product. For example, in particular embodiments, a single ring can be placed on a tobacco product to indicate the nicotine content of the tobacco product while one or more additional visual indicators can also be present to indicate the content of another tobacco component, such as tar, carbon monoxide, nitric oxide, one or more carcinogens, one or more additives, and the like. Various exemplary types of tobacco-product contents that can be represented by visual indicators are discussed more fully below. [0029] The visual indicators of content can be presented using colors, printed textures, or using other artistic media of expression that allow one to discern one indicator from another. In some embodiments, the content indicators are imprinted on the tobacco product. Standard printing techniques can be used to place the visual indicators on the tobacco products. In embodiments directed to directly labeling lozenges and gum, the visual content indicator can be impressed or stamped directly onto the lozenge or gum. Additionally, visual indicators can be presented as holograms. Methods of making holograms are found in U.S. Patent No. 5,796,500, to Hart, entitled "Methods and Apparatus for Making Holograms," issued on August 18, 1998, and methods of impressing holograms onto paper are provided in U.S. Patent No. 5,862,750, to Dell'Olmo, entitled "Method for Impressing Directly on Paper Holograms, Kinetic Holograms, Diffraction Patterns or Microengravings Producing other Optical Effects," issued on January 26, 1999; each of the foregoing is hereby expressly incorporated by reference in its entirety. Visual indicators, such as holograms, can also be affixed directly to a tobacco product. [0030] In certain embodiments, the content indicators can include perforations in the tobacco product. In other embodiments, the use of perforations as content indicators is expressly excluded. It is important to note that for embodiments wherein the use of perforations as content indicators is expressly excluded, the tobacco product can still have perforations for other purposes, such as for intermixing air with smoke. In further embodiments, the visual indicators can include a bar code on the tobacco product that can be read by a laser scanner. In other embodiments, the use of bar codes as content indicators is expressly excluded. In further embodiments, content indicators that require a laser scanner to be discerned are also expressly excluded. Still in further embodiments, a content indicator can be identified tactilely. In other embodiments the use of bar codes and/or tactile content indicators is expressly excluded. [0031] In still other embodiments, the tobacco product bares content indicators that can be readily or quickly identified by a tobacco user. The ease of identifying a content indicator typically depends on the total number and types of content indicators present on a tobacco product. In general, the fewer total number and types of content indicators used, the more readily a tobacco user can identify the contents of the tobacco product. [0032] In other embodiments, the tobacco products described herein can include a relatively large number and/or variety of content indicators. In certain aspects, the tobacco products can include at least 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, or more, content indicators, which can be the same or different in type, size, and shape. [0033] The visual indicators can be located anywhere on the tobacco product. For example, one or more visual indicators can be located on a tobacco product package or wrapper. For example, in some embodiments, such indicators can be included on a cigarette carton, cigarette package, cigar, cigar wrapper or container, tobacco gum, tobacco gum wrapper or container, tobacco lozenge, tobacco lozenge wrapper or container, chewing tobacco container, or a snuff container. In another embodiment, the tobacco product is a cigarette and the one or more visual indicators of content can be located anywhere on the cigarette. [0034] FIGURE 1 shows a schematic representation of a cigarette 10. The cigarette comprises a tobacco rod 20. The tobacco rod typically comprises a combined form of shredded and blended tobacco wrapped in cigarette paper 30. Some cigarettes further comprise a filter or plug 40, which is shown in FIGURE 1 as being wrapped with plug wrap 50 and tipping paper 60. One or more visual indicators of content can be placed anywhere on the cigarette, for example, on the cigarette paper 30, the tipping paper 60, anywhere on the filter or plug 40, or at the junction between the cigarette paper and the tipping paper. In further embodiments, the filter end of the cigarette is the primary location of any content indicator(s). [0035] Visual indicators of content can be placed on a tobacco product in any orientation. For example, the visual indicators can be placed circumferentially on a tobacco product. In an alternate embodiment, one or more visual indicators of content are placed axially on a tobacco product. [0036] The above-description of visual indicators is applicable to the tobacco products, tobacco product labeling systems, and methods of labeling tobacco products provided herein. Specifically, the tobacco products can be labeled with these visual indicators, and the tobacco product labeling systems and methods of labeling can be used to label tobacco products with these visual indicators. Tobacco Product Components [0037] Tobacco products typically comprise tobacco and other components. Aspects of^* the invention can be used to provide visual indicators that represent the presence and quantity of one or more particular components of tobacco products. Various tobacco product components that can be represented using the visual indicators of content are discussed below. Examples include visual content indicators that denote a pH content level, a nicotine content level, one or more additive levels, one or more carcinogen levels, a carbon monoxide level, a nitric oxide level, a tar content level, or one or more TSNA content levels of a tobacco product. Nicotine and TSNAs [0038] The visual indicators of content disclosed herein can be used to indicate the quantity of nicotine present in a tobacco product. Health conscious consumers of tobacco products are becoming mindful of the additive characteristics of certain tobacco products and the role that nicotine plays in establishing such addictions. Nicotine is present in most tobacco products. For example, cigarettes typically comprise chopped tobacco leaf blended from two main varieties. The first type, yellowish 'bright', also known as Virginia flue where it was originally grown, typically contains around 2.5-3% nicotine. The second type, Burley tobacco, typically has a higher nicotine content of around 3.5-5%. Some blends, however, contain Oriental tobacco, which is also typically a low nicotine variety. As will be discussed in more detail below, methods are available to lower the naturally occuning nicotine content in tobacco. [0039] Nicotine (Cι₀H_I N₂) is a naturally occurring alkaloid that has a potent stimulating effect. The body absorbs nicotine when one inhales the smoke from a tobacco product or liberates the compound when a tobacco product is masticated. Nicotine stimulates the central nervous system, increasing heart rate and blood pressure. Nicotine is toxic in large quantities and can cause death by paralyzing muscles involved in respiration. [0040] Nicotine has been reported to be extremely addictive, on par with cocaine and heroin. Individuals that have become habituated to nicotine intake will typically experience negative physiological effects when nicotine is withdrawn. These physiological effects include strong cravings to ingest nicotine. These strong cravings are often accompanied by feelings of anxiety and irritability. Individuals suffering from nicotine withdrawal will frequently become restlessness, may gain weight, and may suffer from decreased concentration. [0041] While it has not been scientifically demonstrated that nicotine itself is a carcinogen, TSNAs are highly carcinogenic. Formation of TSNAs occurs during curing and burning of tobacco. Nitrosamines are formed by the nitrosation of secondary and tertiary amines. These amines are present in tobacco products as nicotine, nornicotine, anabasine, and anatabine. Exemplary TSNAs include N-nitrosonomicotine (NNN), 4-(methylnitrosamineo)-l-(3-pyridyl)-l- butanone (NNK), 4-(methylnitrosamino)-l-(3-pyridyl)-l-butanol (NNAL), N'nitrosoantabine (NAT), N'-nitrosoanabasine (NAB), 4-(methylnitrosamino)-4-(3-ρyridyl)butanal (NNA), 4- (methylnitrosamino)-4.-(3-pyridyl)-l-butanol (iso-NNAL), and 4-(methylnitrosamino)-4-(3- pyridyl)butyric acid (iso-NNAC). [0042] Tobacco-specific nitrosamines are found in smoking and smokeless tobacco products. Tobacco-specific nitrosamines are known to induce tumors of the lung, oral cavity, esophagus, pancreas, and liver. There is also evidence that TSNAs may be linked to cervical cancer and may also cause reproductive damage. TSNAs are known to bind to DNA and to hemoglobin. In fact, the TSNA adduct in blood is used to determine whether a subject has been exposed to tobacco smoke. Due to the harmful effects caused by nicotine and TSNAs, it would be advantageous to reduce the amounts of these compounds in tobacco products. [0043] Accordingly, in some embodiments, one or more visual content indicators can be used to denote the content level of nicotine and/or one or more TSNAs in tobacco products containing reduced levels of nicotine and/or one or more TSNAs. As discussed in detail below, several methods for reducing endogenous levels of nicotine and TSNAs in a tobacco plant have been discovered. These approaches can be used to create the tobacco products described herein. In some embodiments, tobacco plants having a reduced amount of nicotine and/or TSNAs that retain good smoking characteristics and taste, when manufactured into tobacco products, can be used. Approaches to make tobacco products having reduced nicotine and/or TSNA levels [0044] Nicotine is produced in tobacco plants by the condensation of nicotinic acid and 4-methylaminobutanal. Two regulatory loci (Nicl and Nic2) act as co-dominant regulators of nicotine production. These two loci are unlinked and the gene action is semi-dominant and primarily additive (Legg et al. (1969) J. Hered., 60, 213-217). [0045] Genetic and enzyme analyses have been used to investigate the Nicl and Nic2 genes. Collins et al. ((1974) Crop Set, 14, 77-80) prepared doubled haploid tobacco breeding lines of these four alkaloid genotypes. The genotype of standard cultivars is Nicl/Nicl Nic2/Nic2 and that of low nicotine lines is nicl/nicl nic2/nic2. Nicl/Nicl nic2/nic2 is a high intermediate and nicl/nicl Nic2/Nic2 is a low intermediate (Legg and Collins (1971) Can. J. Genet. Cytol. 13, 287- 291). These lines are similar in days-to-flower, number of leaves, leaf size, and plant height. Enzyme analyses of roots of single and double Nic mutants show that the activities of two enzymes, quinolate phosphoribosyl transferase (QPTase) and putrescine methyl transferase (PMTase), are directly proportional to levels of nicotine biosynthesis (Saunders and Bush (1979) Plant Physiol 64:236). Both Nicl and Nic2 affect PMTase and QPTase activities in roots, and thus, regulate nicotine synthesis (Leete (1983) In: Alkaloids: Chemical and Biological Perspectives, S.W. Pelletier, ed. John Wiley & Sons, pp. 85-152). [0046] Enzyme analyses of roots of single and double Nic mutants show that the activities of QPTase and PMTase are directly proportional to levels of nicotine biosynthesis. An obligatory step in nicotine biosynthesis is the formation of nicotinic acid from quinolinic acid, which step is catalyzed by QPTase. QPTase appears to be a rate-limiting enzyme in the pathway supplying nicotinic acid for nicotine synthesis in tobacco (See, e.g., Feth et al, Planta, 168, pp. 402-07 (1986) and Wagner et al, Physiol. Plant, 68, pp. 667-72 (1986), herein expressly incorporated by reference in its entirety). A comparison of enzyme activity in tobacco tissues (root and callus) with different capacities for nicotine synthesis shows that QPTase activity is strictly correlated with nicotine content (Wagner and Wagner, Planta 165:532 (1985), herein expressly incorporated by reference in its entirety). In fact, Saunders and Bush (Plant Physiol 64:236 (1979), herein expressly incorporated by reference in its entirety, showed that the level of QPTase in the roots of low nicotine mutants is proportional to the levels of nicotine in the leaves. [0047] Hibi et al. ((1994) Plant Cell, 6, 723-735) isolated the cDNA encoding PMTase, PMT, and showed that PMT transcript levels are regulated by Nicl and Nic2. The QPTase cDNA and genomic clones (NtQPTl) have also been isolated and the transcript levels of NtQPTl are also regulated by Nicl and Nic2. Thus, it appears that the Nz^'c genes regulate nicotine content by regulating the transcript levels of genes encoding the two rate-limiting enzymes, PMTase and QPTase. Further, Nicl and Nic2 have been shown to be positive regulators of NtQPTl transcription and that promoter sequences upstream of the transcription initiation site contain the ezs-acting sequences necessary for Nic gene product activation of NtQPTl transcription. Because expression of QPTase and PMTase are coordinately-regulated by the Nic gene products, it likely that the Nz^'c gene products also directly regulate transcription of the PMT gene. [0048] One approach for reducing nicotine involves reducing the amount of a required enzyme (i.e. QPTase and PMTase) in the biosynthetic pathway leading to its production. Where the affected enzyme naturally occurs in a rate-limiting amount (relative to the other enzymes required in the pathway), any reduction in that enzyme's abundance will decrease the production of the end product. If the amount of the enzyme is not normally rate-limiting, its presence in a cell must be reduced to rate-limiting levels in order to diminish the pathway's output. Conversely, if the naturally-occurring amount of enzyme is rate limiting, then any increase in the enzyme's activity will result in an increase in the biosynthetic pathway's end product. [0049] The modification of nicotine levels in tobacco plants by antisense regulation of PMTase expression is proposed in US Patent No. 5,369,023, entitled "Method of Purifying Putrescine N-Methyltransferase from Tobacco Plant Extract with an Anion Exchange Medium," issued on November 29, 1994 and U.S. Patent No. 5,260,205, entitled "Method of Purifying Putrescine N-methyltransferase from Tobacco Plant Extract with a Polyamine," issued on November 9, 1993 to Nakatani and Malik, each of which is hereby expressly incorporated by reference in its entirety. PCT application WO 94/28142, entitled "Putrescine N-Methyltransferase, Recombinant DNA Molecules Encoding Putrescine N-Methyltransferase, and Transgenic Tobacco Plants with Decreased Alkaloid Content," filed June 1, 1994, to Wahad and Malik describes DNA encoding PMT and the use of sense and antisense PMT constructs. Additionally, PCT Application WO 98/56923, entitled "Regultaion of Quinolate Phosphoribosyl Transferase Expression," filed June 10, 1998, to Conkling et al. describes DNA encoding a plant QPTase enzyme, constructs comprising such DNA, and methods of altering QPTase expression to increase or decrease nicotine production in tobacco plants. Both of these PCT applications are expressly incorporated by reference in their entireties. Still further, U.S. patent application serial number 09/941,042 to Conkling, entitled "Transgenic Plants Containing Molecular Decoys that Alter Protein Content Therein," filed on August 28, 2001, which is hereby expressly incorporated by reference in its entirety, describes the use of DNA encoding regulatory sequences for the QPTase enzyme and methods of using these sequences as molecular decoys to sequester transcription factors at sites distant to the endogenous promoter for the QPTase gene, thereby decreasing nicotine production in tobacco plants. [0050] More specific examples of generating reduced nicotine tobacco can be found in PCT application WO 02/100199, entitled "Modifying Nicotine and Nitrosamine Levels in Tobacco," and filed on June 6, 2002, PCT application WO 02/018607, entitled "Transgenic Plants Containing Molecular Decoys that Alter Protein Content Therein," and filed on August 28, 2001, PCT application WO 98/56923, entitled "Regulation of Quinolate Phosphoribosyl Transferase Expression," and filed on June 10, 1998, U.S. Patent No. 6,586,661, entitled "Regulation of Quinolate Phosphoribosyl Transferase Expression by Transformation with a Tobacco Quinolate Phosphoribosyl Transferase Nucleic Acid," and issued on July 1, 2003, U.S. Patent No. 6,423,520, entitled "Regulation of Quinolate Phosphoribosyl Transferase Expression," and issued on July 23, 2002, U.S. Application No. 09/963,340 entitled "Regulation of Quinolate Phosphoribosyl Transferase Expression," filed on September 24, 2001, U.S. Application No. 10/356,076, entitled "Regulation of Quinolate Phosphoribosyl Transferase Expression," and filed January 31, 2003, and U.S. Application No. 09/941,042, entitled "Transgenic Plants Containing Molecular Decoys that Alter Protein Content Therein," and filed on August 28, 2001. Each of the foregoing is hereby expressly incorporated by reference in its entirety. [0051] The visual indicators of content discussed above can be used to indicate the content of nicotine or TSNAs in a particular tobacco product. The particular tobacco product can have about O.Olmg or less, 0.05mg, 0.075mg, O.lmg, 0.15mg, 0.2mg, 0.25mg, 0.3mg, 0.35mg, 0.4mg, 0.45mg, 0.5mg, 0.55mg, 0.6mg, 0.65mg, 0.7mg, 0.75mg, 0.8mg, 0.85mg, 0.9mg, 0.95mg, l.Omg, l.Olmg, 1.05mg, 1.075mg, l.lmg, 1.15mg, 1.2mg, 1.25mg, 1.3mg, 1.35mg, 1.4mg, 1.45mg, 1.5mg, 1.55mg, 1.6mg, 1.65mg, 1.7mg, 1.75mg, 1.8mg, 1.85mg, 1.9mg, 1.95mg, 2.0mg, 2.0 lmg, 2.05mg, 2.075mg, 2. lmg, 2.15mg, 2.2mg, 2.25mg, 2.3mg, 2.35mg, 2.4mg, 2.45mg, 2.5mg, 2.55mg, 2.6mg, 2.65mg, 2.7mg, 2.75mg, 2.8mg, 2.85mg, 2.9mg, 2.95mg, 3.0mg, 3.01mg, 3.05mg, 3.075mg, 3. lmg, 3.15mg, 3.2mg, 3.25mg, 3.3mg, 3.35mg, 3.4mg, 3.45mg, 3.5mg, 3.55mg, 3.6mg, 3.65mg, 3.7mg, 3.75mg, 3.8mg, 3.85mg, 3.9mg, 3.95mg, 4.0mg, 4.0 lmg, 4.05mg, 4.075mg, 4.1mg, 4.15mg, 4.2mg, 4.25mg, 4.3mg, 4.35mg, 4.4mg, 4.45mg, 4.5mg, 4.55mg, 4.6mg, 4.65mg, 4.7mg, 4.75mg, 4.8mg, 4.85mg, 4.9mg, 4.95mg, 4.0mg, 4.0 lmg, 4.05mg, 4.075mg, 4.1mg, 4.15mg, 4.2mg, 4.25mg, 4.3mg, 4.35mg, 4.4mg, 4.45mg, 4.5mg, 4.55mg, 4.6mg, 4.65mg, 4.7mg, 4.75mg, 4.8mg, 4.85mg, 4.9mg, 4.95mg, 5.0mg, 5.01mg, 5.05mg, 5.075mg, 5. lmg, 5.15mg, 5.2mg, 5.25mg, 5.3mg, 5.35mg, 5.4mg, 5.45mg, 5.5mg, 5.55mg, 5.6mg, 5.65mg, 5.7mg, 5.75mg, 5.8mg, 5.85mg, 5.9mg, 5.95mg, 6.0mg, 6.01mg, 6.05mg, 6.075mg, 6.1mg, 6.15mg, 6.2mg, 6.25mg, 6.3mg, 6.35mg, 6.4mg, 6.45mg, 6.5mg, 6.55mg, 6.6mg, 6.65mg, 6.7mg, 6.75mg, 6.8mg, 6.85mg, 6.9mg, 6.95mg, 7.0mg, 7.01mg, 7.05mg, 7.075mg, 7. lmg, 7.15mg, 7.2mg, 7.25mg, 7.3mg, 7.35mg, 7.4mg, 7.45mg, 7.5mg, 7.55mg, 7.6mg, 7.65mg, 7.7mg, 7.75mg, 7.8mg, 7.85mg, 7.9mg, 7.95mg, 8.0mg, 8.01mg, 8.05mg, 8.075mg, 8. lmg, 8.15mg, 8.2mg, 8.25mg, 8.3mg, 8.35mg, 8.4mg, 8.45mg, 8.5mg, 8.55mg, 8.6mg, 8.65mg, 8.7mg, 8.75mg, 8.8mg, 8.85mg, 8.9mg, 8.95mg, 9.0mg, 9.01mg, 9.05mg, 9.075mg, 9.1mg, 9.15mg, 9.2mg, 9.25mg, 9.3mg, 9.35mg, 9.4mg, 9.45mg, 9.5mg, 9.55mg, 9.6mg, 9.65mg, 9.7mg, 9.75mg, 9.8mg, 9.85mg, 9.9mg, 9.95mg, lO.Omg, lO.Olmg, 10.05mg, 10.075mg, lO.lmg, 10.15mg, 10.2mg, 10.25mg, 10.3mg, 10.35mg, 10.4mg, 10.45mg, 10.5mg, 10.55mg, 10.6mg, 10.65mg, 10.7mg, 10.75mg, 10.8mg, 10.85mg, 10.9mg, 10.95mg, l l.Omg, l l.Olmg, 11.05mg, U.075mg, 11. lmg, 11.15mg, 11.2mg, 11.25mg, 11.3mg, 11.35mg, 11.4mg, 11.45mg, 11.5mg, 11.55mg, 11.6mg, 11.65mg, 11.7mg, 11.75mg, 11.8mg, 11.85mg, 11.9mg, 11.95mg, or 12mg of nicotine, for example. [0052] In other embodiments the tobacco product can have about less than 0.1 micrograms, 0.15 micrograms, 0.2 micrograms, 0.25 micrograms, 0.3 micrograms, 0.35 micrograms, 0.4 micrograms, 0.45 micrograms, 0.5 micrograms, 0.55 micrograms, 0.6 micrograms, 0.65 micrograms, 0.7 micrograms, 0.75 micrograms, 0.8 micrograms, 0.85 micrograms, 0.9 micrograms, 0.95 micrograms, 1.0 micrograms, 1.1 micrograms, 1.15 micrograms, 1.2 micrograms, 1.25 micrograms, 1.3 micrograms, 1.35 micrograms, 1.4 micrograms, 1.45 micrograms, 1.5 micrograms, 1.55 micrograms, 1.6 micrograms, 1.65 micrograms, 1.7 micrograms, 1.75 micrograms, 1.8 micrograms, 1.85 micrograms, 1.9 micrograms, 1.95 micrograms, 2.0 micrograms, 2.1 micrograms, 2.15 micrograms, or 2.2 micrograms of total TSNA, for example. [0053] In addition to nicotine and TSNA levels, the content levels of secondary or tertiary amine, or any other component of interest can be denoted by one or more visual content indicators. Examples of additional compounds are discussed in more detail below. [0054] In certain embodiments, the visual content indicators described herein are used in accordance with Federal Trade Commission guidelines regarding such labeling. In the United States, the standard method of measuring and reporting tar, nicotine, and carbon monoxide yields from a cigarette is the methodology originally prescribed by the Federal Trade Commission in 1967 and modified in 1980. See, 32 Fed. Reg. 11,178 (1967) and 45 Fed. Reg. 46,483 (1980), herein expressly incorporated by reference in their entireties. This method prescribes reporting the tar content to the nearest milligram and the nicotine yield to the nearest one tenth of a milligram. 32 Fed. Reg. 11,178 (1967). The concentration of carbon monoxide is reported as milligrams per cigarette. 45 Fed. Reg. 46,483 (1980). [0055] To accommodate these reporting parameters, yields of a particular component of a tobacco product will be rounded in accordance the traditional scientific rounding convention. The convention comprises rules for rounding when the last figure of the number to be rounded is 6 or higher, 4 or less, and 5. According to this convention, when the last figure of a number to be rounded is 6 or above, the number is rounded up, and when last figure of the number to be rounded is 4 or less, the number is rounded down. Therefore, a tar yield of 1.6 milligrams (mg) or higher will be rounded up to 2 mg and a tar yield of 1.4 mg or less will be rounded down to 1 mg. Similarly, a nicotine yield of 0.26 mg or higher will be rounded up to 0.3 mg and a nicotine yield of 0.24 mg or less will be rounded down to 0.2 mg. According to the rounding convention, when the last figure in the number to be rounded is a 5 and the figure preceding the 5 is odd, the number is rounded up, but when the figure preceding the 5 is even, the number is rounded down. Following this convention, a tar yield of 1.5 mg is rounded up to 2 mg and a tar yield of 2.5 mg is rounded down to 2 mg. Similarly, a nicotine yield 0.35 mg is rounded up to 0.4 mg and a nicotine yield of 0.45 mg is rounded down to 0.4 mg. In embodiments of the present invention, when reference is made to a particular amount of a content or component of a tobacco product, such reference is generally intended to be inclusive of amounts within the range of amounts that would be included under the rounding convention. For example, a cigarette reported to have 0.6 mg of nicotine would be considered to be any cigarette having between 0.55 mg and 0.65 mg nicotine. [0056] The Federal Trade Commission periodically publishes compilations of tar, nicotine, and carbon monoxide yields, also referred to as ratings, for domestic cigarettes. See, Federal Trade Commission, "Tar, " Nicotine, and Carbon Monoxide of the Smoke of 1294 Varieties of Domestic Cigarettes for the Year 1998, 1 n.l (2000), herein expressly incorporated by reference in its entirety. The tar, nicotine, and carbon monoxide ratings reported in these compilations are all determined by the prescribed Federal Trade Commission testing method. Id. at 4-8. Tobacco Carcinogens [0057] The visual indicators of content disclosed herein can be used to indicate the quantity of carcinogens present in a tobacco product. A carcinogen generally relates to a compound or agent that can cause cancer in an organism exposed thereto. Chemicals or compounds are typically acknowledged as being a carcinogen once research results indicates a statistical probability that exposure to the chemical leads to a cancerous growth. Tobacco smoke has long been recognized as a carcinogen. [0058] Research into the components of tobacco smoke has identified a number of compounds within tobacco smoke that are or may be carcinogenic. Compounds in tobacco smoke that are recognized as being carcinogenic include: 4-aminobiphenyl, benzene, cadmium, chromium, 2-naphthylamine, nickel, polonium-210 (radon), and vinyl chloride. Compounds in tobacco smoke that are probably carcinogenic to humans include: acrylonitrile, benzo[ ]pyrene, 1,3-butadiene, dibenz(a,h)anthracene, formaldehyde, N-nitrosodiethylamine, and N-nitrosodimethylamine. Compounds in tobacco smoke that are possibly carcinogenic to humans include: acetaldehyde, benzo[δ]fluoranthene, benzo[ ]fluoranthene, benzo[/V]fluoranthene, dibenz[α,/z]acridine, dibenz[α,j]acridine, 7H-dibenz[c, ]carbazole, dibenzo(α,z^')pyrene, dibenzo(α,t)pyrene, 1,1- dimethylhydrazine, hydrazine, indeno[l,2,3-c ]pyrene, lead, 5-methylchrysene, 4- (methylnitrosamino)-l-(3-pyridyl)-l-butanone (ΝΝK), 2-nitropropane, N-nitrosodiethanolamine, N- nitrosomethylethylamine, N-nifrosomorpholine, N^'-nitrosonornicotine (ΝΝΝ), N- nitrosopyrrolidine, quinoline, ortho-toluidine, and urethane. Compounds in tobacco smoke that may be carcinogenic to humans include: chrysene, crotonaldehyde, Ν'-nitrosoanabasine (ΝAB), and Ν'-nitrosoanatabine (NAT). One or more visual indicators of content can be used to label a tobacco product and thus indicate the presence of any of the compounds listed above, or other carcinogens/potential carcinogens. In other embodiments, the one or more visual indicators of content can be used to denote the presence and quantity of carcinogens in smokeless tobacco, such as chewing tobacco and snuff. Tobacco Additives [0059] The visual indicators of content disclosed herein can be used to indicate the quantity of one or more tobacco additives present in a tobacco product. In addition to the tobacco itself, a variety of additives are typically included in a tobacco product. There are more than 600 additives that can legally be added to tobacco products. These additives can be used, for example, to enhance the taste of the tobacco product or to facilitate nicotine uptake by a user of the tobacco product. [0060] The following is a representative list of known tobacco additives: acetanisole, acetic acid, acetoin, acetophenone, 6-acetoxydihydrotheaspirane, 2-acetyl-3- ethylpyrazine, 2- acetyl-5-methylfuran, acetylpyrazine, 2-acetylpyridine, 3-acetylpyridine, 2-acetylthiazole, aconitic acid, alanine, alfalfa extract, allspice extract, oleoresin, and oil, allyl hexanoate, allyl ionone, almond bitter oil, ambergris tincture, ammonia, ammonium bicarbonate, ammonium hydroxide, ammonium phosphate dibasic, ammonium sulfide, amyl alcohol, amyl butyrate, amyl formate, amyl octanoate, alpha-amylcinnamaldehyde, amyris oil, trans-anethole, angelica root extract, oil and seed oil, anise, anise star, extract and oils, anisyl acetate, anisyl alcohol, anisyl formate, anisyl phenylacetate, apple juice concentrate, extract, and skins, apricot extract and juice concentrate, 1- arginine, asafetida fluid extract and oil, ascorbic acid, 1-asparagine monqhydrate, 1-aspartic acid, balsam peru and oil, basil oil, bay leaf, oil and sweet oil, beeswax white, beet juice concentrate, benzaldehyde, benzaldehyde glyceryl acetal, benzoic acid, benzoin, benzoin resin, benzophenone, benzyl alcohol, benzyl benzoate, benzyl butyrate, benzyl cinnamate, benzyl propionate, benzyl salicylate, bergamot oil, bisabolene, black currant buds absolute, borneol, bornyl acetate, buchu leaf oil, 1,3-butanediol, 2,3-butanedione, 1-butanol, 2-butanone, 4(2-butenylidene)-3,5,5-trimethyl- 2-cyclohexen-l-one, butter, butter esters, and butter oil, butyl acetate, butyl butyrate, butyl butyryl lactate, butyl isovalerate, butyl phenylacetate, butyl undecylenate, 3-butylidenephthalide, butyric acid, cadinene, caffeine, calcium carbonate, camphene, cananga oil, capsicum oleoresin, caramel color, caraway oil, carbon dioxide, cardamom oleoresin, extract, seed oil, and powder, carob bean and extract, beta-carotene, carrot oil, carvacrol, 4-carvomenthenol, 1-carvone, beta-caryophyllene, beta-caryophyllene oxide, cascarilla oil and bark extract, cassia bark oil, cassie absolute and oil, castoreum extract, tincture and absolute, cedar leaf oil, cedarwood oil terpenes and virginiana, cedrol, celery seed extract, solid, oil, and oleoresin, cellulose fiber, chamomile flower oil and extract, chicory extract, chocolate, cinnamaldehyde, cinnamic acid, cinnamon leaf oil, bark oil, and extract, cinnamyl acetate, cinnamyl alcohol, cinnamyl cinnamate, cinnamyl isovalerate, cinnamyl propionate, citral, citric acid, citronella oil, dl-citronellol, citronellyl butyrate, citronellyl isobutyrate, civet absolute, clary oil, clover tops, red solid extract, cocoa, cocoa shells, extract, distillate and powder, coconut oil, coffee, cognac white and green oil, copaiba oil, coriander extract and oil, corn oil, corn silk, costus root oil, cubeb oil, cuminaldehyde, para-cymene, 1-cysteine, dandelion root solid extract, davana oil, 2-trans, 4-trans-decadienal, delta-decalactone, gamma- decalactone, decanal, decanoic acid, 1-decanol, 2-decenal, dehydromenthofurolactone, diethyl malonate, diethyl sebacate, 2,3-diethylpyrazine, dihydro anethole, 5,7-dihydro-2-methylthieno(3,4- D) pyrimidine, dill seed oil and extract, meta-dimethoxybenzene, para-dimethoxybenzene, 2,6- dimethoxyphenol, dimethyl succinate, 3,4-dimethyl-l,2-cyclopentanedione, 3,5- dimethyl-1,2- cyclopentanedione, 3,7-dimethyl-l,3,6-octatriene, 4,5-dimethyl-3-hydroxy-2,5-dihydrofuran-2-one, 6,10-dimethyl-5,9-undecadien-2-one, 3,7-dimethyl-6-octenoic acid, 2,4-dimethylacetophenone, alpha,para-dimethylbenzyl alcohol, alpha,alpha-dimethylphenethyl acetate, alpha,alpha dimethylphenethyl butyrate, 2,3-dimethylρyrazine,2,5-dimethylpyrazine, 2,6-dimethylpyrazine, dimethyltetrahydrobenzofuranone, delta-dodecalactone, gamma-dodecalactone, para- ethoxybenzaldehyde, ethyl 10-undecenoate, ethyl 2-methylbutyrate, ethyl acetate, ethyl acetoacetate, ethyl alcohol, ethyl benzoate, ethyl butyrate, ethyl cinnamate, ethyl decanoate, ethyl fenchol, ethyl furoate, ethyl heptanoate, ethyl hexanoate, ethyl isovalerate, ethyl lactate, ethyl laurate, ethyl levulinate, ethyl maltol, ethyl methyl phenylglycidate, ethyl myristate, ethyl nonanoate, ethyl octadecanoate, ethyl octanoate, ethyl oleate, ethyl palmitate, ethyl phenylacetate, ethyl propionate, ethyl salicylate, ethyl trans-2-butenoate, ethyl valerate, ethyl vanillin, 2-ethyl (or methyl)-(3,5 and 6)-methoxypyrazine, 2-ethyl- 1-hexanol, 3-ethyl -2 -hydroxy-2-cyclopenten-l-one, 2-ethyl-3, (5 or 6)-dimethylpyrazine, 5-ethyl-3-hydroxy-4-methyl-2(5h)-furanone, 2-ethyl-3- methylpyrazine, 4-ethylbenzaldehyde, 4-ethylguaiacol, para-ethylphenol, 3-ethylpyridine, eucalyptol, farnesol, D-fenchone, fennel sweet oil, fenugreek, extract, resin, and absolute, fig juice concentrate, food starch modified, furfuryl mercaptan, 4-(2-furyl)-3-buten-2-one, galbanum oil, genet absolute, gentian root extract, geraniol, geranium rose oil, geranyl acetate, geranyl butyrate, geranyl formate, geranyl isovalerate, geranyl phenylacetate, ginger oil and oleoresin, 1-glutamic acid, 1-glutamine, glycerol, glycyrrhizin ammoniated, grape juice concentrate, guaiac wood oil, guaiacol, guar gum, 2,4-heptadienal, gamma-heptalactone, heptanoic acid, 2-heptanone, 3-hepten- 2-one, 2-hepten-4-one, 4-heptenal, trans -2-heptenal, heptyl acetate, omega-6-hexadecenlactone, gamma-hexalactone, hexanal, hexanoic acid, 2-hexen-l-ol, 3-hexen-l-ol, cis-3-hexen-l-yl acetate, 2-hexenal, 3-hexenoic acid, trans-2-hexenoic acid, cis-3-hexenyl formate, hexyl 2-methylbutyrate, hexyl acetate, hexyl alcohol, hexyl phenylacetate, 1-histidine, honey, hops oil, hydrolyzed milk solids, hydrolyzed plant proteins, 5-hydroxy-2,4-decadienoic acid delta- lactone, 4-hydroxy-2,5- dimethyl-3(2h)-furanone, 2-hydroxy-3,5,5-trimethyl-2-cyclohexen-l-one, 4-hydroxy -3-pentenoic acid lactone, 2-hydroxy-4-methylbenzaldehyde, 4-hydroxybutanoic acid lactone, hydroxycitronellal, 6-hydroxydihydrotheaspirane, 4-(para-hydroxyphenyl)-2-butanone, hyssop oil, immortelle absolute and extract, alpha-ionone, beta-ionone, alpha-irone, isoamyl acetate, isoamyl benzoate, isoamyl butyrate, isoamyl cinnamate, isoamyl formate, isoamyl hexanoate, isoamyl isovalerate, isoamyl octanoate, isoamyl phenylacetate, isobornyl acetate, isobutyl acetate, isobutyl / alcohol, isobutyl cinnamate, isobutyl phenylacetate, isobutyl salicylate, 2-isobutyl-3- methoxypyrazine, alpha-isobutylphenethyl alcohol, isobutyraldehyde, isobutyric acid, d,l- isoleucine, alpha-isomethylionone, 2-isopropylphenol, isovaleric acid, jasmine absolute, concrete and oil, kola nut extract, labdanum absolute and oleoresin, lactic acid, lauric acid, lauric aldehyde, lavandin oil, lavender oil, lemon oil and extract, lemongrass oil, 1-leucine, levulinic acid, licorice root, fluid, extract and powder, lime oil , linalool, linalool oxide, linalyl acetate, linden flowers, lovage oil and extract, 1-lysine, mace powder, extract and oil , magnesium carbonate, malic acid, malt and malt extract, maltodexfrin, maltol, maltyl isobutyrate, mandarin oil, maple syrup and concentrate, mate leaf, absolute and oil, para-mentha-8-thiol-3-one, menthol, menthone, menthyl acetate, dl-methionine, methoprene, 2-methoxy-4-methylphenol, 2-methoxy-4-vinylphenol, para- methoxybenzaldehyde, 1 -(para-methoxyphenyl)- 1 -penten-3 -one, 4-(para-methoxyphenyl)-2- butanone, l-(para-methoxyphenyl)-2-propanone, methoxypyrazine, methyl 2-furoate, methyl 2- octynoate, methyl 2-ρyrrolyl ketone, methyl anisate, methyl anthranilate, methyl benzoate, methyl cinnamate, methyl dihydrojasmonate, methyl ester of rosin, partially hydrogenated, methyl isovalerate, methyl linoleate (48%), methyl linolenate (52%) mixture, methyl naphthyl ketone, methyl nicotinate, methyl phenylacetate, methyl salicylate, methyl sulfide, 3 -methyl- 1- cyclopentadecanone, 4-methyl-l-phenyl-2-pentanone, 5-methyl-2-phenyl-2-hexenal, 5-methyl-2- thiophenecarboxaldehyde, 6-methyl-3 ,-5 -heptadien-2-one, 2-methyl-3 -(para-isopropylphenyl) propionaldehyde, 5-methyl-3-hexen-2-one, l-methyl-3methoxy-4-isopropylbenzene, 4-methyl-3- pentene-2-one, 2-methyl-4-phenylbutyraldehyde, 6-methyl-5-hepten-2-one, 4-methyl-5- thiazoleethanol, 4-methyl-5-vinylthiazole, methyl-alpha-ionone, methyl-trans-2-butenoic acid, 4- methylacetophenone, para-methylanisole, alpha-methylbenzyl acetate, alpha-methylbenzyl alcohol, 2-methylbutyraldehyde, 3-methylbutyraldehyde, 2-methylbutyric acid, alpha- methylcinnamaldehyde, methylcyclopentenolone, 2-methylheptanoic acid, 2-methylhexanoic acid, 3-methylpentanoic acid, 4-methylpentanoic acid, 2-methylpyrazine, 5-methylquinoxaline, 2- methyltetrahydrofuran-3-one, (methylthio)methylpyrazine (mixture of isomers), 3- methylthiopropionaldehyde, methyl 3-methylthiopropionate, 2-methyl valeric acid, mimosa absolute and extract, molasses extract and tincture, mountain maple solid extract, mullein flowers, myristaldehyde, myristic acid, myrrh oil, beta-napthyl ethyl ether, nerol, neroli bigarde oil, nerolidol, nona-2-trans,6-cis-dienal, 2,6-nonadien-l-ol, gamma-nonalactone, nonanal, nonanoic acid, nonanone, trans-2-nonen-l-ol, 2-nonenal, nonyl acetate, nutmeg powder and oil, oak chips extract and oil, oak moss absolute, 9,12-octadecadienoic acid (48%) and 9,12,15-octadecatrienoic acid (52%), delta-octalactone, gamma-octalactone, octanal, octanoic acid, 1-octanol, 2-octanone, 3- octen-2-one, l-octen-3-ol, l-octen-3-yl acetate, 2-octenal, octyl isobutyrate, oleic acid , olibanum oil, opoponax oil and gum, orange blossoms water, absolute, and leaf absolute, orange oil and extract, origanum oil, orris concrete oil and root extract, palmarosa oil, palmitic acid, parsley seed oil, patchouli oil, omega-pentadecalactone, 2,3-pentanedione, 2-pentanone, 4-pentenoic acid, 2- pentylpyridine, pepper oil, black and white, peppermint oil, peruvian (bois de rose) oil, petitgrain absolute, mandarin oil and terpeneless oil, alpha-phellandrene, 2-phenenthyl acetate, phenenthyl alcohol, phenethyl butyrate, phenethyl cinnamate, phenethyl isobutyrate, phenethyl isovalerate, phenethyl phenylacetate, phenethyl salicylate, 1-phenyl-l-propanol, 3-phenyl-l-propanol, 2- phenyl-2-butenal, 4-phenyl-3-buten-2-ol, 4-ρhenyl-3-buten-2-one, phenylacetaldehyde, phenylacetic acid, 1-phenylalanine, 3-phenylpropionaldehyde, 3-phenylpropionic acid, 3- phenylpropyl acetate, 3-phenylpropyl cinnamate, 2-(3-phenylpropyl)tetrahydrofuran, phosphoric acid, pimenta leaf oil, pine needle oil, pine oil, scotch, pineapple juice concentrate, alpha-pinene, beta-pinene, d-piperitone, piperonal, pipsissewa leaf extract, plum juice, potassium sorbate, 1- proline, propenylguaethol, propionic acid, propyl acetate, propyl para-hydroxybenzoate, propylene _v glycol, 3-propylidenephthalide, prune juice and concentrate, pyridine, pyroligneous acid and extract, pyrrole, pyruvic acid, raisin juice concentrate, rhodinol, rose absolute and oil, rosemary oil, rum, rum ether, rye extract, sage, sage oil, and sage oleoresin, salicylaldehyde, sandalwood oil, yellow, sclareolide, skatole, smoke flavor, snakeroot oil, sodium acetate, sodium benzoate, sodium bicarbonate, 2,2,6-trimethylcyclohexanone, 2,3,5-trimethylpyrazine, 1-tyrosine, delta- undercalactone, gamma-undecalactone, undecanal, 2-undecanone, 10-undecenal, urea, valencene, valeraldehyde, valerian root extract, oil and powder, valeric acid, gamma-valerolactone, valine, vanilla extract and oleoresin, vanillin, veratraldehyde, vetiver oil, vinegar, violet leaf absolute, walnut hull extract, water, wheat extract and flour, wild cherry bark extract, wine and wine sherry, xanthan gum, 3,4-xylenol, and yeast. The visual indicators of content discussed herein can be used to indicate the content level of any tobacco additive present in a particular tobacco product, such as, for example, any of those listed above. Tar [0061] In other embodiments, the visual indicators of content disclosed herein can be used to indicate the quantity of tar present in or generated from the use of a tobacco product. Generally, most smoking tobacco products produce tar when used. Tar contains a number of known carcinogens. Tar is a mixture of many different chemicals that include cancer-causing agents such as formaldehyde, arsenic, cyanide, benzo[a]pyrene, benzene, toluene and acrolein. When smoke is inhaled, particles of tar can travel in the smoke to the lungs and respiratory system where they are absorbed. The visual indicators of content discussed herein can be used to indicate tar content or the content of various tar components in a particular tobacco product. Nicotine Substitutes [0062] In certain embodiments, it is advantageous to add a nicotine substitute to a tobacco product. More specifically, adding nicotine substitutes can be effective in tobacco-use cessation programs that are designed to alleviate the effects of nicotine withdrawal that tobacco users experience when trying to quit. Typically tobacco products containing a nicotine substitute have either a reduced level of nicotine or are essentially nicotine-free. Accordingly, in certain embodiments the content indicator can indicate the presence of a nicotine substitute within the tobacco product. [0063] Several nicotine substitutes are known in the art and any one or more nicotine substitutes can be associated with, incorporated in or consumed in conjunction with the tobacco products described herein. See e.g., U.S Patent No. 5,780,051, to Eswara et al, entitled "Methods and Articles of Manufacture for Nicotine Cessation and Monitoring Nicotine Use," and issued on July 14, 1998, U.S. Patent No. 6,166,032, to Viner, entitled "Method for Controlling Tobacco Use and Alleviating Withdrawal Symptoms Due to Cessation of Tobacco Use," and issued on December 26, 2000, U.S. Patent No. 6,197,827, to Gary, entitled "Nicotine Addiction Treatment," issued on March 6, 2001, U.S. Patent No. 4,966,916, to Abood, entitled "Agonists and Antagonists to Nicotine as Smoking Deterrents," issued on October 30, 1990, and U.S. Patent No. 4,835,162, to Abood, entitled "Agonists and Antagonists to Nicotine as Smoking Deterents," issued on May 30, 1989. Each of the foregoing is hereby expressly incorporated by reference in its entirety. The nicotine substitute can be applied to the tobacco itself at any stage of curing, processing, or manufacturing or to the tobacco product (e.g., paper, processed tobacco, filter). [0064] The term "nicotine substitute" is used in a general sense to refer to either or both of two classes of compounds: (1) a compound that is a receptor binding nicotine substitute or

(2) a compound that is a sensory altering nicotine substitute. A nicotine substitute as used herein does not include nicotine. The term "receptor binding nicotine substitute" generally refers a compound that binds with a specific affinity for one or more nicotinic receptors (e.g., Lobeline,

Arecoline, Isoarecolone, Anabasine and Cytisine). The term "sensory altering nicotine substitute" generally refers to a compound which, when administered to a subject, alters the subjects sensory perception such that the subjects awareness of nicotine withdrawal is reduced (e.g., anti-anxiety agents, antidepressants, antiobsessional agents, and antipsychotic agents). The visual content indicators provided herein can denote the presence or content level of any of the above mentioned nicotine substitutes, or any other nicotine substitute. These substitutes and their uses are discussed further in U.S. Provisional Patent Application No. 60/486,875, entitled "Tobacco Products

Containing Low Nicotine Tobacco and Nicotine Replacement Compounds," and filed on July 10,

2003 (attorney docket No. VTOB.273PR), which is hereby incorporated by reference in its entirety. Systems [0065] The disclosed invention also relates to tobacco product labeling systems. In certain embodiments these systems can be used to generate a plurality of visual indicators of content. In certain embodiments, the content indicators denote the relative content of one or more components of a tobacco product. The content indicator can be an alpha/numerical character or a non-alpha/numerical indicator. In one embodiment the content indicators are applied directly to a tobacco product, such as a cigarette paper, a cigarette filter, tipping paper, a lozenge, gum, or a cigar. In another embodiment, the content indicators' are applied to a tobacco product package, such as a box, wrapper, carton, or container. Application may be in the form of ink or other printing media. Another alternative involves the use of symbols affixed to a tobacco product. [0066] According to the disclosed invention, visual indicators of content are used in a predetermined manner to indicate content levels. In the case when tobacco products are available with varying levels of a particular component, a system of content indicators is applied to the various products that denotes the level of the component of interest. For example, a tobacco product that has a) a specified or base content level of nicotine, b) a reduced content level of nicotine relative to the first product, and c) a product that is essentially free of nicotine can each have a particular content indicator. Each of these indicators is cross-referenced against one another to allow one to visually determine the content of nicotine in a particular tobacco product. It is noted that nicotine content in a particular tobacco product is merely one example of a compound that can be denoted by a visual content indicator encompassed by the disclosed invention. [0067] While each visual content indicator is selected and used to indicate the content of a particular tobacco component, it is noted that the selection and placement of particular visual indicators of content can be in many cases a design choice having ornamental and nonfunctional characteristics. [0068] In some embodiments, the systems can include a printing apparatus for imprinting the visual content indicator onto the tobacco product. Examples of printing apparatuses that can be used to imprint content indicators on tobacco products are disclosed in U.S. Patent No. 6,279,475 to Cardoso, entitled Apparatus for supplying flowable printing ink to a printer for cigarette paper webs, issued on August 28, 2001, which is hereby expressly incorporated by reference in its entirety. In one aspect, the printing apparatus can be constructed and assembled to apply a flowable mixture of a printing ink and a compressed gas to a printer for the application of printing ink to a running elongated strip of imprintable material in the form of a pattern. In more specific embodiments, the imprintable material can be cigarette or tipping paper. In further aspects, the printing apparatus is capable of applying printing ink at a predetermined rate. [0069] In other embodiments, the printing apparatus can include a nozzle having a mixture-receiving inlet and an outlet for directing the mixture against the printer, and means for supplying the mixture to the inlet in quantities which vary as a function of the predetermined rate. [0070] ^• The printing apparatus can further include means for moving the strip of imprintable material lengthwise and means for moving the nozzle relative to the imprintable material and the printer. In still further embodiments, the means for moving the nozzle can comprise means for reciprocating the nozzle, means for reciprocating an adjustable prime mover, and means for adjusting the prime mover as a function of the predetermined rate. The prime mover can include an adjustable electric motor, and the adjusting means can also include means for transmitting electric signals exhibiting characteristics dependent on the predetermined rate to the electric motor. [0071] The electric motor or other selected adjusting means can be designed and mounted to reciprocate the nozzle, at least substantially transversely of the moving strip. For example, the means for reciprocating the nozzle at least substantially transversely of the moving imprintable material can comprise a variable-speed electric motor and means for transmitting to such motor electric signals to regulate the speed of the motor as a function of the predetermined rate. [0072] The predetermined rate can be stored in a memory, in the form of information, which is addressed to operate the moving means. This information can be in the form of a so- called reference-print image, and the means for transmitting to the motor electric signals can comprise means for photoelectronically scanning the image and for generating signals for transmission to the moving means. The printing apparatus can also include a mobile printing ink applicator which is arranged to contact and to transfer printing ink onto the running imprintable material, and means for transferring ink from the outlet to the applicator. [0073] Other examples of printing devices that can be used with the embodiments provided herein are found in U.S. Patent No. 4,372,208, to Legardinier, entitled "Device for Supplying with Ink Printing Apparatus for Cigarette-Making Machines," and issued on February 8, 1983, which is hereby expressly incorporated by reference in its entirety. Those with skill in the art will recognize that suitable printing apparatuses can be used in conjunction with various cigarette making machines. Examples of cigarette making machines that can be used herein are disclosed in U.S. Patent No. 6,557,560, to Kastner, entitled "Cigarette Making Machine," and issued on May 6, 2003, U.S. Patent No. 6,020,969, to Struckhoff et al., entitled "Cigarette Making Machine Including Band Inspection," and issued on February 1, 2000, U.S. Patent No. 5,819,751, to Barnes et al., entitled "Cigarette and Method of Making Same," and issued on October 13, 1998, and U.S. Patent No. 5,626,152 to Davis et al., entitled "Cigarette Making Machine," and issued on May 6, 1997. Each of the foregoing patents is hereby expressly incorporated by reference in its entirety. [0074] In other embodiments, the visual content indicator can be imprinted on any suitable cigarette paper. Examples of cigarette paper that can be used with the embodiments herein can be found in U.S. Patent No. 6,584,981, to Hampl Jr., entitled "Cigarette Paper Containing Carbon Fibers for Improved Ash Characteristics," and issued on July 1, 2003, U.S. Patent No. 5,540,242 to Chao et al., entitled "Cigarette Paper Having Reduced Sidestream Properties," and issued on July 30, 1996, U.S. Patent No. 5,109,876, to Hayden et al, entitled "Cigarette Paper and Cigarette Incorporating Same," and issued on May 5, 1992, and U.S. Patent No. 5,062,434, to

Aulbach et al., entitled "Cigarette Paper," and issued on November 5, 1991. Each of the foregoing patents is hereby expressly incorporated by reference in its entirety. In some embodiments, the content indicator can be imprinted on any suitable tipping paper. Examples of tipping paper can be used with the embodiments herein are found in U.S. Patent No. 4,094,324, to Bolsinger et al., entitled "Perforated Cigarette Tipping Paper," and issued on June 13, 1978, and U.S. Patent No.

5,830,318, to Snow et al., entitled "High Opacity Tipping Paper," and issued on November 3, 1998.

Each of the foregoing patents is hereby expressly incorporated by reference in its entirety. [0075] In some embodiments, the systems provided herein can be used to manufacture the tobacco products described herein. In other aspects, the systems can be used with the methods of labeling described herein. Methods [0076] The disclosed invention further encompasses methods for labeling tobacco products with at least one visual indicator of content, h certain embodiments, the tobacco product labeling systems provided herein can be used with these methods. A preliminary step of such methods typically provides a system of labeling wherein particular content indicators are assigned to indicate the relative content of a particular component in a tobacco product. Tobacco products that will display the various content indicators are prepared. Once the system is determined and the products are prepared, the visual indicators of content are affixed to those tobacco products that contain the relevant quantity of the component of interest. As discussed above, the visual indicators can be affixed to the tobacco product itself, such as a label on an individual cigarette. In the alternative, the visual content indicator can be affixed to packaging that contains individual tobacco product units. The Tobacco Products [0077] A variety of tobacco products can be labeled with a visual content indicator.

Examples of tobacco products include, individual cigarettes, packages of cigarettes, cartons of cigarettes, individual cigars, boxes of cigars, cigar wrappers or labels, cigar containers, pipe tobacco containers, tobacco lozenges and their wrappers and containers, tobacco gum and their wrappers and containers, chewing tobacco containers, and snuff containers. [0078] Although the invention has been described with reference to the above embodiments, it should be understood that various modifications can be made without departing from the spirit of the invention. Accordingly, the invention is limited only by the following claims.

All references cited herein are hereby expressly incorporated by reference.

Claims

WHAT IS CLAIMED IS: 1. A cigarette labeled with a visual content indicator, wherein the visual content indicator denotes a content level of one or more substances contained within the cigarette.

2. The cigarette of Claim 1, wherein the visual content indicator denotes a content level of the cigarette selected from the group consisting of a pH content level, a nicotine content level, one or more additive levels, one or more carcinogen levels, a carbon monoxide level, a nitric oxide level, a tar content level, and a tobacco-specific nitrosamine (TSNA) content level.

3. The cigarette of Claim 1, wherein the content level is selected from the group consisting of a base content level, a reduced content level, and an essentially free content level.

4. The cigarette of Claim 1, wherein the cigarette is labeled with a base nicotine content indicator.

5. The cigarette of Claim 4, wherein the cigarette labeled with the base nicotine content indicator contains approximately 0.6mg nicotine.

6. The cigarette of Claim 4, wherein the base nicotine content indicator is a ring.

7. The cigarette of Claim 1, wherein the cigarette is labeled with a reduced nicotine content indicator.

8. The cigarette of Claim 7, wherein the cigarette labeled with the reduced nicotine content indicator contains approximately 0.3mg nicotine.

9. The cigarette of Claim 7, wherein the reduced nicotine content indicator is two rings.

10. The cigarette of Claim 1, wherein the cigarette is labeled with an essentially nicotine-free content indicator.

11. The cigarette of Claim 10, wherein the cigarette labeled with the essentially nicotine-free content indicator contains approximately 0.05mg nicotine.

12. The cigarette of Claim 10, wherein the essentially nicotine-free content indicator is three rings.

13. The cigarette of Claim 2, wherein the one or more carcinogens is selected from the group consisting of 4-aminobiphenyl, benzene, cadmium, chromium, 2-naphthylamine, nickel, polonium-210 (radon), vinyl chloride, acrylonitrile, benzo[α]pyrene, 1,3-butadiene, dibenz(a,h)anthracene, formaldehyde, N-nitrosodiethylamine, N-nitrosodimethylamine, acetaldehyde, benzo[3]fiuoranthene, benzo[ ]fluoranthene, benzo[/V]fluoranthene, dibenz[α,/z]acridine, dibenz[α ^']acridine, 7H-dibenz[c,g]carbazole, dibenzo(αJ)pyrene, dibenzo(α,/)pyrene, 1,1-dimethylhydrazine, hydrazine, indeno[l,2,3-ccT|pvrene, lead, 5- methylchrysene, 4-(methylnitrosamino)-l-(3-pyridyl)-l-butanone ■ (ΝΝK), 2-nitropropane, N- nitrosodiethanolamine, N-nifrosomethylethylamine, N-nifrosomorpholine, N'-nitro^'sonornicotine (NNN), N-nitrosopyrrolidine, quinoline, ortho-toluidine, urethanechrysene, crotonaldehyde, Ν'- nitrosoanabasine (ΝAB), and Ν'-nitrosoanatabine (NAT).

14. A tobacco product labeling system comprising: a content indicator, wherein the content indicator denotes relative content levels of a tobacco product labeled with the content indicator, wherein the content indicator is applied to the tobacco product.

15. The tobacco product labeling system of Claim 14, wherein the content indicator is a non-alpha/numerical indicator.

16. The tobacco product labeling system of Claim 14, wherein the tobacco product is labeled with a plurality of content indicators, wherein each content indicator denotes the content of a different tobacco product component.

17. The tobacco product labeling system of Claim 14, wherein the content indicator denotes a content level of the tobacco product selected from the group consisting of a pH content level, a nicotine content level, one or more additive levels, one or more carcinogen levels, a carbon monoxide level, a nitric oxide level, a tar content level, and a tobacco-specific nitrosarnine (TSNA) content level.

18. The tobacco product labeling system of Claim 14, wherein the content indicator is a nicotine content indicator selected from the group consisting of a base nicotine content indicator, a reduced nicotine content indicator, and an essentially nicotine-free content indicator.

19. The tobacco product labeling system of Claim 18, wherein the reduced nicotine content indicator appears on a tobacco product containing approximately half the nicotine of a tobacco product labeled with the base nicotine content indicator.

20. The tobacco product labeling system of Claim 18, wherein the essentially nicotine- free content indicator appears on a tobacco product containing approximately one sixth the nicotine of a tobacco product labeled with the reduced nicotine content indicator.

21. The tobacco product labeling system of Claim 14, wherein the tobacco product is a cigarette.

22. The tobacco product labeling system of Claim 21, wherein the cigarette is labeled with a base nicotine content indicator.

23. The tobacco product labeling system of Claim 22, wherein the cigarette labeled with the base nicotine content indicator contains 0.6mg nicotine.

24. The tobacco product labeling system of Claim 22, wherein the base nicotine content indicator is a ring.

25. The tobacco product labeling system of Claim 21, wherein the cigarette is labeled with a reduced nicotine content indicator.

26. The tobacco product labeling system of Claim 25, wherein the cigarette labeled with the reduced nicotine content indicator contains 0.3mg nicotine.

27. The tobacco product labeling system of Claim 25, wherein the reduced nicotine content indicator is two rings.

28. The tobacco product labeling system of Claim 21, wherein the cigarette is labeled with an essentially nicotine-free content indicator.

29. The tobacco product labeling system of Claim 28, wherein the cigarette labeled with the essentially nicotine-free content indicator contains no more than 0.05mg nicotine.

30. The tobacco product labeling system of Claim 28, wherein the essentially nicotine- free content indicator is three rings.

31. The tobacco product labeling system of Claim 17, wherein the one or more carcinogens is selected from the group consisting of 4-aminobiphenyl, benzene, cadmium, chromium, 2-naphthylamine, nickel, polonium-210 (radon), vinyl chloride, acrylonifrile, benzo[α]pyrene, 1,3-butadiene, dibenz(a,h)anthracene, formaldehyde, N-nitrosodiethylamine, N- nitrosodimethylamine, acetaldehyde, benzo[&]fluoranthene, benzo[ ]fluoranthene, benzo[/c]fluoranthene, dibenz[α,/z]acridine, dibenz[α ^']acridine, 7H-dibenz[c, ]carbazole, dibenzo(α,z)pyrene, dibenzo(α,/)pyrene, 1,1-dimethylhydrazine, hydrazine, indeno[l,2,3-cd]pyrene, lead, 5-methylchrysene, 4-(methylnitrosamino)-l-(3-pyridyl)-l-butanone (ΝΝK), 2-nitropropane, N-nifrosodiethanolamine, N-nitrosomethylethylamine, N-nifrosomo holine, N'-nitrosonornicotine (ΝΝΝ), N-nitrosopyrrolidine, quinoline, ortho-toluidine, urethanechrysene, crotonaldehyde, Ν'- nitrosoanabasine (ΝAB), and Ν'-nitrosoanatabine (NAT).

32. A method for labeling comprising: providing a system of labeling comprising a content indicator, wherein the content indicator denotes relative content of a tobacco product component in a tobacco product labeled with the content indicator; and labeling the tobacco product with the content indicator that reflects the content of the tobacco product component in the tobacco product the system of labeling.

33. The method of Claim 32, wherein the content indicator is a non-alpha/numerical indicator.

34. The method of Claim 32, wherein the tobacco product is labeled with a plurality of content indicators, wherein each content indicator denotes the content of a different tobacco product component.

35. The method of Claim 32, wherein the content indicator denotes a content level of the tobacco product selected from the group consisting of a pH content level, a nicotine content level, one or more additive levels, one or more carcinogen levels, a carbon monoxide level, a nitric oxide level, a tar content level, and a tobacco-specific nitrosamine (TSNA) content level.

36. The method of Claim 32, wherein the content indicator is a nicotine content indicator selected from the group consisting of a base nicotine content indicator, a reduced nicotine content indicator, and an essentially nicotine-free content indicator.

37. The method of Claim 36, wherein the reduced nicotine content indicator appears on a tobacco product containing approximately half the nicotine of a tobacco product labeled with the base nicotine content indicator.

38. The method of Claim 36, wherein the essentially nicotine-free content indicator appears on a tobacco product containing approximately one sixth the nicotine of a tobacco product labeled with the reduced nicotine-level indicator.

39. The method of Claim 32, wherein the tobacco product is a cigarette.

40. The method of Claim 39, wherein the cigarette is labeled with a base nicotine content indicator.

41. The method of Claim 40, wherein the cigarette labeled with the base nicotine content indicator contains 0.6mg nicotine.

42. The method of Claim 40, wherein the base nicotine content indicator is a ring.

43. The method of Claim 39, wherein the cigarette is labeled with a reduced nicotine content indicator.

44. The method of Claim 43, wherein the cigarette labeled with the reduced nicotine content indicator contains 0.3mg nicotine.

45. The method of Claim 43, wherein the reduced nicotine content indicator is two rings.

46. The method of Claim 39, wherein the cigarette is labeled with an essentially nicotine-free content indicator.

47. The method of Claim 46, wherein the cigarette labeled with the essentially nicotine-free content indicator contains no more than 0.05mg nicotine.

48. The method of Claim 46, wherein the essentially nicotine-free content indicator is three rings.

49. The method of Claim 35, wherein the one or more carcinogens is selected from the group consisting of 4-aminobiphenyl, benzene, cadmium, chromium, 2-naphthylamine, nickel, polonium-210 (radon), vinyl chloride, acrylonitrile, benzo[α]pyrene, 1,3-butadiene, dibenz(a,h)anthracene, formaldehyde, N-nitrosodiethylamine, N-nitrosodimethylamine, acetaldehyde, benzo[ό]fluoranthene, benzo[ ]fluoranthene, benzo[/c]fluoranthene, dibenz[αJz]acridine, dibenz[<x/Jacridine, 7H-dibenz[c,g-]carbazole, dibenzo(α,z^')pyrene, dibenzo(α,/)pyrene, 1,1-dimethylhydrazine, hydrazine, indeno[l,2,3-αt]pyrene, lead, 5- methylchrysene, 4-(methylnifrosamino)-l-(3-pyridyl)-l-butanone (Ν K), 2-nitropropane, N- nitrosodiethanolamine, N-nitrosomethylethylamine, N-nifrosomorpholine, N'-nitrosonornicotine (NNN), N-nifrosopyrrolidine, quinoline, ortho-toluidine, urethanechrysene, crotonaldehyde, Ν'- nitrosoanabasine (ΝAB), andΝ'-nitrosoanatabine (NAT).

50. The method of Claim 42, wherein the tobacco product is labeled with a plurality of content indicators, wherein each content indicator denotes the content of a different tobacco product component.