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Tobacco smoking, is often refered to as "smoking", is the act of burning the dried leaves of the tobacco plant and inhaling the smoke. The practice was common to many Native American cultures and was introduced to the rest of the world by sailors following European exploration of the Americas.
Tobacco smoke contains nicotine, a stimulant which temporarily improves alertness and memory, but also forms a strong physical and psychological chemical dependence (addiction). Medical research has determined that smoking is a major contributing factor towards many health problems, particularly lung cancer, emphysema, and cardiovascular disease. Many countries regulate or restrict tobacco sales and advertising and require warnings be placed prominently on the product packaging. Many municipalities now ban smoking in a variety of public venues due to health impacts on non-smokers breathing second-hand smoke.
While smoking is on the decline in many industrial nations due in part to these initiatives, smoking in less restrictive developing countries is on the rise and worldwide production and usage of tobacco continues to increase.
Methods of smoking
- Main article: Cigarette
A cigarette is a product manufactured out of cured and finely cut tobacco leaves, which are rolled or stuffed into a paper-wrapped cylinder (generally less than 120 mm in length and 10 mm in diameter). The cigarette is ignited at one end and allowed to smoulder for the purpose of inhalation of its smoke from the other (usually filtered) end, which is inserted in the mouth. Cigarettes are sometimes smoked with a cigarette holder. (See also Bidi).
- Main article: Cigar
A cigar is a tightly rolled bundle of dried and fermented tobacco, one end of which is ignited so that its smoke may be drawn into the smoker's mouth through the other end.
The word cigar is from the Spanish word cigarro, which the Oxford English Dictionary suggests is a variation on cigarra, Spanish for "cicada," due to their shape, especially that of what is now called the perfecto. Other sources have indicated that it may be derived from the Mayan word sikar, "tobacco."
Cigar tobacco is grown in significant quantities in such nations as Brazil, Cameroon, Cuba, Dominican Republic, Honduras, Indonesia, Mexico, Nicaragua and the United States of America. Cigars manufactured in Cuba have historically been considered to be without peer, although many experts believe that the best offerings from Honduras and Nicaragua rival those from Cuba. The Cuban reputation arises from both the unique characteristics of the Vuelta Abajo region in the Pinar del Río Province at the west of the island, where a microclimate allows for high-quality tobacco to be grown, and the skill of Cuban cigar makers.
- Main article: Smoking pipe
A smoking pipe is a device used for smoking tobacco. The smoking pipe typically consists of a small chamber (the bowl) for the combustion of the substance to be smoked and a thin stem (shank) that ends in a mouthpiece (also called a bit).
Pipes are made from a variety of materials: briar, corncob, meerschaum, African block meerschaum, clay, cherry, wood, glass, gourd, bamboo (as in the Japanese Kiseru), and various other materials, such as morta and metal. Many pipes are carved with a great deal of artistry.
Tobaccos used for smoking pipes are often treated and blended to achieve flavour nuances not available in other tobacco products. Many of these are blends using staple ingredients of variously cured Burley and Virginia tobaccos which are enhanced by spice tobaccos, among them many Oriental or Balkan varietals, Latakia (a fire-cured spice tobacco of Cypriot or Syrian origin), Perique (uniquely grown in St. James Parish, Louisiana) or blends of Virginia and Burley tobaccos of African, Indian, or South American origins. Traditionally, many U.S. blends are made of American Burley with sweeteners and flavorings added to create an "aromatic" flavor, whereas "English" blends are based on natural Virginia tobaccos enhanced with Oriental and other natural tobaccos. There is a growing tendency towards "natural" tobaccos which derive their aromas from artful blending with selected spice tobaccos only and careful, often historically-based, curing processes.
Pipes can range from the very simple machine-made briar pipe to highly-prized handmade and artful implements created by pipemakers which can be very expensive collector's items.
- Main article: Hookah
A hookah is a traditional Middle Eastern or South Asian device for smoking, which operates by water-filtration and indirect heat. It can be used for smoking many substances, such as tobacco, and herbal fruits. Hookah smoking is most popular in the Middle East, but is currently gaining popularity in other parts of the world.
Hookah smoking is considered to be safer than other forms of smoking due to water-filtration. However, the water does not filter out many of the toxins, and several negative health effects were still linked to hookah smoking. One study found hookah smoke to be both clastogenic and genotoxic for human beings.  Another study showed that the CO hazard is as high with hookah smoking as with cigarette smoking.  In addition to the cancer risk, there is some risk of infectious disease resulting from pipe sharing, and other harm caused by any addition of alcohol or psychoactive drugs to the tobacco. 
Factors that influence smoking behavior
Tobacco smoke contains nicotine, a stimulant, which increases the acetylcholine levels in the brain, temporarily increasing memory and alertness. Recent evidence has shown that nicotine use also increases dopamine levels in the brain, promoting feelings of pleasure and reward.  One study found that smokers exhibit better reaction-time and memory performance as they tire, compared to non-smokers. 
Nicotine, an element of tobacco smoke, is one of the most addictive substances that exists. When tobacco is smoked, most of the nicotine is pyrolyzed; however, a dose sufficient to cause mild somatic dependency and mild to strong psychological dependency remains. According to studies by Henningfield and Benowitz, nicotine is more addictive than marijuana and caffeine but of a lesser potential for somatic dependency than ethanol, cocaine and heroin. A study by Perrine concludes nicotine's potential for psychological dependency exceeds all other studied drugs  - even ethanol, an extremely physically addictive substance with a severe withdrawal that can be fatal. Many smokers use nicotine compulsively. About half of Canadians who currently smoke have tried to quit.  McGill University health professor Jennifer O'Loughlin stated that nicotine addiction can occur as soon as five months after the start of smoking.
It can be difficult to quit smoking due to the withdrawal symptoms which include insomnia, irritability, anxiety, decreased heart rate, weight gain, and nicotine cravings. The relapse rate for quitters is high: about 60% relapse in three months. Also, nicotine users are sometimes reluctant to quit smoking because they do not see any short-term damages it may cause.
- Main article: Tobacco advertising
Before the 1970s, most tobacco advertising was legal in the United States and most European nations. In the United States, in the 1950s and 1960s, cigarette brands were frequently sponsors of television shows—most notably shows such as To Tell the Truth and I've Got a Secret. One of the most famous television jingles of the era came from an advertisement for Winston cigarettes. The slogan "Winston tastes good like a cigarette should!" proved to be catchy, and is still quoted today. Another popular slogan from the 1960s was "Us Tareyton smokers would rather fight than switch!," which was used to advertise Tareyton cigarettes.
Many nations, including Russia, still allow billboards advertising tobacco use. Tobacco smoking is still advertised in special magazines, during sporting events, in gas stations and stores, and in more rare cases on television.
In the United States, it was believed by many that tobacco companies are marketing tobacco smoking to minors. For example, Reynolds American Inc. used the Joe Camel cartoon character to advertise Camel cigarettes. Other brands such as Virginia Slims targeted women with slogans like "You've Come a Long Way Baby".
Some nations, including the UK and Australia, have begun anti-smoking advertisements to counter the effects of tobacco advertising.
The actual effectivness of tobacco advertisement is widely debated. According to an opinion piece by Henry Saffer, public health experts say that tobacco advertising increases cigarette consumption, but there is a significant empirical literature that finds little or no effect of tobacco advertising on smoking. 
Psychological factors in tobacco smoking
Many anti-smoking organizations say that teenagers begin their smoking habits due to peer pressure. However, one study found that direct pressure to smoke cigarettes did not play a significant part in adolescent smoking. In that study, adolescents also reported low levels of both normative and direct pressure to smoke cigarettes. A similar study showed that individuals play a more active role in starting to smoke than has previously been acknowledged and that social processes other than peer pressure need to be taken into account.  Another study's results revealed that peer pressure was significantly associated with smoking behavior across all age and gender cohorts, but that intrapersonal factors were significantly more important to the smoking behavior of 12-13 year-old girls than same-age boys. Within the 14-15 year-old age group, one peer pressure variable emerged as a significantly more important predictor of girls' than boys' smoking.  It is debated whether peer pressure or self-selection is a greater cause of adolescent smoking.
Ethnic and cultural influences
Smoking is more popular in some cultures than in others. One study found that in the United States, white youths reported the highest rates of lifetime, current, and persistent smoking, and initiated smoking at a significantly earlier age than African-Americans and Hispanics.  In the United States, 33.4% of American Indians and Alaskan Natives smoke, 22.2% of whites smoke, 20.2% of African Americans smoke, 15.0% of Hispanics smoke, and only 11.3% of Asian Americans smoke.  Religion and local cultures play a significant role in the smoking prevalnce in the region. Utah, a predominantly Mormon state, has a smoking rate of 12%, while Kentucky, which is the second largest tobacco producing state  and whose state economy is the most tobacco dependent , has a 31% smoking rate.  In Europe, smoking is more common than it is in the United States. In Germany, 35% of the population smokes, and in Russia, 39% of the population smokes (63% of all males smoke) and in Greece 89% smoke. In the United States, the smoking rate is 22.1%.
Children of smoking parents are more likely to smoke than children with non-smoking parents. One study found that parental smoking cessation was associated with less adolescent smoking, except when the other parent currently smoked.  A current study tested the relation of adolescent smoking to rules regulating where adults are allowed to smoke in the home. Results showed that restrictive home smoking policies were associated with lower likelihood of trying smoking for both middle and high school students. 
Smoking in movies and television
Exposure to smoking in movies has been linked with adolescent smoking initiation in cross-sectional studies.   Hollywood movies tend to have a high incidence of smoking behavior. According to a study of movies created between 1988 and 1997, eighty-seven percent of these movies portrayed various tobacco use, with an average of 5 occurrences per film. R-rated movies had the greatest number of occurrences and were most likely to feature major characters using tobacco.  Despite the declining tobacco use in the society, the incidence of smoking in 2002 movies was nearly the same as in 1950 movies. 
There have been moves to reduce the depiction of protagonists smoking in television shows, especially those aimed at children. For example, Ted Turner has taken steps to remove or edit scenes that depict characters smoking in cartoons such as Tom and Jerry, The Flintstones and Scooby-Doo , which are shown on his Cartoon Network and Boomerang television channels.
The use of smoking to project an image
Famous smokers of the past used cigarettes or pipes as part of their image, such as Jean Paul Sartre's Gauloise-brand cigarettes, Bertrand Russell's pipe, Lord of the Rings' Gandalf, or the news broadcaster Edward R. Murrow's cigarette. Writers in particular seemed to be known for smoking; see, for example, Richard Klein's book Cigarettes are Sublime for the analysis, by this Cornell University professor of French literature, of the role smoking plays in 19th and 20th century letters. British Prime Minister Harold Wilson was well known for smoking a pipe in public as was Winston Churchill for his cigars. Sherlock Holmes, the fictional detective created by Sir Arthur Conan Doyle, was also never without a pipe.
Smoking and depression
Data from multiple studies suggest that depression plays a role in cigarette smoking.  A history of regular smoking was observed more frequently among individuals who had experienced a major depressive disorder at some time in their lives than among individuals who had never experienced major depression or among individuals with no psychiatric diagnosis.  Another study found that the average lifetime daily cigarette consumption was strongly related to lifetime prevalence, and to prospectively assessed one year prevalence of major depression.  People with major depression are also much less likely to quit due to the increased risk of experiencing mild to severe states of depression, including a major depressive episode.  Depressed smokers appear to experience more withdrawal symptoms on quitting, are less likely to be successful at quitting, and are more likely to relapse.  The neurotransmitter systems affected by cigarette smoke mirror the neurotransmitter pathways that are thought to be involved in the biological mechanisms of depression, and the use of antidepressants as adjuvants to smoking-cessation treatment can enhance cessation success rates. 
It is inconclusive if smoking is influenced by genetic factors; one 1990 study posited that 52% of the variance in smoking behaviour is attributable to heritable factors, with the other half were a function of the environment.
- Main article: Health effects of tobacco smoking
As the use of tobacco became popular in Europe, some people became concerned about its possible ill effects on the health of its users. One of the first was King James I of England. In 1604, he wrote "A Counterblaste to Tobacco" in which he asked his subjects:
- "Have you not reason then to bee ashamed, and to forbeare this filthie noveltie, so basely grounded, so foolishly received and so grossely mistaken in the right use thereof? In your abuse thereof sinning against God, harming your selves both in persons and goods, and raking also thereby the markes and notes of vanitie upon you: by the custome thereof making your selves to be wondered at by all forraine civil Nations, and by all strangers that come among you, to be scorned and contemned. A custome lothsome to the eye, hatefull to the Nose, harmefull to the braine, dangerous to the Lungs, and in the blacke stinking fume thereof, neerest resembling the horrible Stigian smoke of the pit that is bottomelesse." (James 1604)
In 1761, English doctor John Hill published "Cautions against the Immoderate Use of Snuff" in which he warned snuff users that they were vulnerable to cancers of the nose. In 1795, American Samuel Thomas von Soemmering reported on cancers of the lip in pipe smokers. In 1912, American Dr. Isaac Adler was the first to strongly suggest that lung cancer is related to smoking. In 1929, Fritz Lickint of Dresden, Germany, published the first formal statistical evidence of a lung cancer–tobacco link, based on a study showing that lung cancer sufferers were likely to be smokers. Lickint also argued that tobacco use was the best way to explain the fact that lung cancer struck men four or five times more often than women (since women smoked much less) (Borio 2006).
In 1964, Luther L. Terry, M.D., Surgeon General of the United States, released the report of the Surgeon General's Advisory Committee on Smoking and Health. It was based on over 7000 scientific articles that linked tobacco use with cancer and other diseases. This report led to laws requiring warning labels on tobacco products and to restrictions on tobacco advertisements. From this time, Americans became much more aware of the dangers of tobacco and its use in the United States began to decline. By 2004, nearly half of all Americans who had ever smoked had quit (CDC 2004).
Health risks of smoking
The health effects of tobacco smoking are related to direct tobacco smoking, as well as passive smoking, inhalation of environmental or secondhand tobacco smoke. A 50 year study of over thirty thousand British physicians showed that nonsmokers lived about 10 more years than the smokers. For those born between 1920 and 1929 the standardized mortality rate between the ages of 35 and 69 for nonsmokers was 15% and for smokers was 43% -- nearly three times greater. Claims that personalities of smokers account for these differences are not convincing in light of the fact that the heavy smokers were about 25 times more likely to die of lung cancer or chronic obstructive pulmonary disease than the nonsmokers.
The United States' Centers for Disease Control and Prevention describes tobacco use as "the single most important preventable risk to human health in developed countries and an important cause of premature death worldwide". Twenty-four percent of pregnant women in Indiana smoke cigarettes. If they didn’t smoke, it is estimated by one source that Indiana would reduce its infant mortality rate (12th highest in the country) by 9%. Tobacco smoke reduces the delivery of oxygen to the fetus through the presence of carbon monoxide, cyanide, and aromatic hydrocarbons. Nicotine and other substances in tobacco smoke cause reduction in placental blood flow, creating further reductions in oxygen delivery as well as reductions in nutrients to the unborn baby. Secondhand smoke exposure during pregnancy produces twice the risk of low birth weight babies. Smoking is the single largest modifiable risk factor in intrauterine growth retardation.
The main health risks in tobacco pertain to diseases of the cardiovascular system, in particular smoking being a major risk factor for a myocardial infarction (heart attack), diseases of the respiratory tract such as Chronic Obstructive Pulmonary Disease (COPD) and emphysema, and cancer, particularly lung cancer and cancers of the larynx and tongue. Prior to World War I, lung cancer was considered to be a rare disease, which most physicians would never see during their career. With the postwar rise in popularity of cigarette smoking, however, came a virtual epidemic of lung cancer.
The carcinogenity of tobacco smoke is not explained by nicotine, which is not carcinogenic or mutagenic. Rather, any partially burnt material, tobacco or not, contains polycyclic aromatic hydrocarbons, particularly benzopyrene. The mechanism of their carcinogenity is well-known: oxidation produces an epoxide, which binds to DNA covalently and permanently distorts it. DNA damage is the cause of cancer.
A person's increased risk of contracting disease is directly proportional to the length of time that a person continues to smoke as well as the amount smoked. However, if someone stops smoking, then these chances gradually decrease as the damage to their body is repaired.
Nicotine is a powerful, addictive stimulant and is one of the main factors leading to the continued tobacco smoking. Although the amount of nicotine inhaled with tobacco smoke is quite small (most of the substance is destroyed by the heat) it is still sufficient to cause physical and/or psychological dependence.
However, smokers usually ignore these facts and trade health risk for other qualities such as enjoyment and satisfied addictions. These smokers often think of the benefits of smoking rather than the downsides. Some smokers claim that the depressant effect of smoking allows them to "calm their nerves", often allowing for increased concentration. This, however, is only partly true. According to the Imperial College London, "Nicotine seems to provide both a stimulant and a depressant effect, and it is likely that the effect it has at any time is determined by the mood of the user, the environment and the circumstances of use. Studies have suggested that low doses have a depressant effect, whilst higher doses have stimulant effect."
The health risks of smoking are not uniform across all smokers but vary according to amount of cigarettes smoked, with those who smoke more cigarettes at greater risk, although light smoking is still a health risk.
According to the Canadian Lung Association, tobacco kills between 40,000-45,000 Canadians per year, more than the total number of deaths from AIDS, traffic accidents, suicide, murder, fires and accidental poisoning.   However, the number of deaths related to smoking may be exaggerated because it is difficult to determine whether smoking actually caused the terminal illness.
Purported health benefits of smoking
Also, it is thought that the risks of Parkinson's disease or Alzheimer's disease may be significantly lower for smokers than for non-smokers though this idea has not been definitively proven. According to previous epidemiological studies, cigarette smokers are 50% less likely to have PD or AD than are age- and gender-matched nonsmokers.  One explanation given for this effect is the fact that nicotine allegedly increases the levels of acetylcholine in the smoker's brain. Parkinson's disease consequently occurs when the effect of dopamine is less than that of acetylcholine. Another explanation may simply be that smokers die before they reach the age at which the onset of Parkinson's disease occurs. However, nicotine, a cholinergic stimulant, is the only substance in tobacco smoke which has those positive effects, and the consumption of pure nicotine would likely be more beneficial than smoking.
More recent evidence has challenged the earlier epidemiological studies on methodological grounds. A prospective Rotterdam Study found that the incidence of Alzheimer's disease is more than double for smokers as compared to non-smokers and the Honolulu Heart Program (a longitudinal cohort study) also found more than twice the risk for Alzheimer's disease among medium and heavy smokers as compared to non-smokers.
- Main article: Passive smoking
Passive or involuntary smoking occurs when the exhaled and ambient smoke (otherwise known as environmental or secondhand smoke) from one person's cigarette is inhaled by other people. Involuntary smoking involves inhaling carcinogens, as well as other toxic components, that are present in secondhand tobacco smoke. Carcinogens that occur in secondhand tobacco smoke include benzene, 1,3-butadiene, benzo[a]pyrene, 4-(methylnitrosamino)-1-(3-pyridyl)-1-butanone, and many others.
It is confirmed that, in adults, secondhand smoke causes lung cancer, nasal sinus cancer, breast cancer in younger women, heart disease, heart attacks, and asthma induction. Second-hand smoke is also known to harm children, infants and reproductive health through acute lower respiratory tract illness, asthma induction and exacerbation, chronic respiratory symptoms, middle ear infection, lower birth weight babies, and Sudden Infant Death Syndrome. 
In June 2006, US Surgeon General Richard H. Carmona called the evidence against passive smoke "indisputable" and said "The science is clear: secondhand smoke is not a mere annoyance, but a serious health hazard that causes premature death and disease in children and non-smoking adults." . Passive smoking is one of the key issues that have lead to introduction of smoking bans, particularly in workplaces.
The composition of Environmental tobacco smoke (ETS) is similar to fossil fuel combustion products that contribute to air pollution, and has been shown to be responsible for indoor particulate matter (PM) levels far exceeding official outdoor limits.
Sudden infant death syndrome
- Main article: Sudden infant death syndrome
According to the U.S. Surgeon General’s Report (Chapter 5; pages 180-194), secondhand smoke is connected to SIDS. Infants who die from SIDS tend to have higher concentrations of nicotine and cotinine (a biological marker for secondhand smoke exposure) in their lungs than those who die from other causes. Infants exposed to secondhand smoke after birth are also at a greater risk of SIDS.
- Main article: Smoking cessation
Many of tobacco's health effects can be minimised through smoking cessation. The British doctors study  showed that those who stopped smoking before they reached 30 years of age lived almost as long as those who never smoked. It is also possible to reduce the risks by reducing the frequency of smoking and by proper diet and exercise. Some research has indicated that some of the damage caused by smoking tobacco can be moderated with the use of antioxidants.
Smokers wanting to quit or to temporarily abstain from smoking can use a variety of nicotine-containing tobacco substitutes, or nicotine replacement therapy (NRT) products to temporarily lessen the physical withdrawal symptoms, the most popular being nicotine gum and lozenges. Nicotine patches are also used for smoking cessation. Medications that do not contain nicotine can also be used, such as bupropion (Zyban).
Peer support can be helpful, such as that provided by support groups and telephone quitlines.(eg., 1-800-QuitNow in the US, 0800 169 0169 in the UK, and 13 7848 in Australia). In addition, there are many self-help books on the market, such as those by Allen Carr and David Marks.
Opinions on smoking
Native Americans and smoking
Communal smoking of a sacred tobacco pipe was a common ritual of many Native American tribes, and was considered a sacred part of their religion. Sema, the Anishinaabe word for tobacco, was grown for ceremonial use and considered the ultimate sacred plant since its smoke was believed to carry prayers to the heavens. Smoking was chiefly done after the evening meal, in the sweathouse, and before going to sleep. The tobacco used during these rituals varies widely in potency -- the Nicotiana rustica species used in South America, for instance, has up to twice the nicotine content of the common North American N. tabacum. Many Native American tribes operate tobacco stores, including on the Internet, where they are usually exempt from taxes and therefore can sell products cheaper than non-Native American dealers.
Christianity and smoking (arguments against)
In more modern times, even before the health risks of smoking were identified for study, smoking was considered an immoral habit by certain Christian preachers and social reformers. Tobacco was listed, along with drunkenness, gambling, cards, dancing and theatre-going, in J.M. Judy's Questionable Amusements and Worthy Substitutes, a book featuring anti-smoking dialogue which was published in 1904 by the Western Methodist Book Concern of Chicago.
Moral concerns about self-injury are also prevalent in Catholic medical ethics on the grounds that people ought to be responsible stewards of the body as a gift from God; the stewardship argument is also used among Protestant groups as an argument against smoking.
Mormonism and smoking (arguments against)
The founder of the Latter Day Saint movement, Joseph Smith, Jr, recorded that on February 27, 1833, he received a revelation which addressed tobacco use. It is commonly known as the Word of Wisdom, and is found in section 89 of the Doctrine and Covenants, a book canonized as scripture by Mormons. (Template:Sourcetext)
And again, tobacco is not for the body, neither for the belly, and is not good for man, but is an herb for bruises and all sick cattle, to be used with judgment and skill.
While initially viewed as a guideline, this was eventually accepted as a commandment; consequently, most Mormons do not smoke.
Judaism and smoking (arguments against)
- Main article: Jewish law and history on smoking
The Jewish Rabbi Yisrael Meir Kagan (1838-1933) was one of the first Jewish authorities to speak out on smoking. He considered it a health risk and a waste of time, and had little patience for those who claimed addiction, stating that they never should have started smoking in the first place (Likutei Amarim 13, Zechor le-Miriam 23).
A shift toward health-oriented concerns may be observed in some people's interpretations of Jewish law (halakha). For instance, when the link between smoking and health was still doubted, Rabbi Moshe Feinstein response stated that smoking was permitted, although still inadvisable.
More recently, rabbinic responsa tend to argue that smoking is prohibited as self-endangerment under Jewish law and that smoking in indoor spaces should be restricted as a type of damage to others.
Other opinions on smoking
Much opposition to smoking is based on arguments grounded on alleged unethical corporate practices of the tobacco industry and public health concerns. Many public interest groups are interested in controlling smoking-induced problems through political means, and mostly consist of former smokers, health professionals, corporate responsibility advocates, school and community-based organizations, and environmental groups.
David Krogh argues for tobacco's uniqueness as a drug and accounts for the fact that in the past, many moralists who disapproved of "recreational" drugs approved of tobacco.
Krogh's book argues that tobacco is not like alcohol or so-called controlled substances, including marijuana, and that smokers use tobacco to normalize their feelings within the narrow band necessary for functioning within an industrial society, where energy levels have to be carefully rationed according to expectations.
Kantians, however, argue against self-injury as a necessary duty, consistent with the moral law or categorical imperative.
Legal issues and regulation
On February 28 2005, an international treaty, the WHO Framework Convention on Tobacco Control, took effect. The FCTC is the world's first public health treaty. Countries that sign on as parties agree to a set of common goals, minimum standards for tobacco control policy, and to cooperate in dealing with cross-border challenges such as cigarette smuggling. Currently the WHO declares that 4 billion people will be covered by the treaty, which includes 168 signatories. Among other steps, signatories are to put together legislation that will eliminate secondhand smoke in indoor workplaces, public transport, indoor public places and, as appropriate, other public places.
Sale to minors
In many countries, including the United States, the European Union member states, New Zealand, Canada, South Africa, Brazil and Australia, it is illegal to sell tobacco products to minors. In the United Kingdom (to rise to 18), The Netherlands, Austria and South Africa it is illegal to sell tobacco products to people under the age of 16. In 46 of the 50 United States, the minimum age is 18, except for Alabama, Alaska, New Jersey, and Utah where the legal age is 19 (also in Suffolk County of Long Island, New York). Some countries have also legislated against giving tobacco products to (i.e. buying for) minors, and even against minors engaging in the act of smoking. Underlying such laws is the belief that people should make an informed decision regarding the risks of tobacco use. These laws have a lax enforcement in some nations and states. In other regions, cigarettes are still sold to minors because the fines for the violation are lower or comparable to the profit made from the sales to minors.
Many governments have introduced excise taxes on cigarettes in order to reduce the consumption of cigarettes. Money collected from the cigarette taxes are frequently used to pay for tobacco use prevention programs, therefore making it a method of internalizing external costs.
In 2002, the Centers for Disease Control and Prevention said that each pack of cigarettes sold in the United States costs the nation more than $7 in medical care and lost productivity.  Another study by a team of health economists finds the combined price paid by their families and society is about $41 per pack of cigarettes. 
Substantial scientific evidence shows that higher cigarette prices result in lower overall cigarette consumption. Most studies indicate that a 10% increase in price will reduce overall cigarette consumption by 3% to 5%. Youth, minorities, and low-income smokers are two to three times more likely to quit or smoke less than other smokers in response to price increases.  
Many nations have implemented some form of tobacco taxation. As of 1997, Denmark had the highest cigarette tax burden of $4.02 per pack. Taiwan only had a tax burden of $0.62 per pack. Currently, the average price and excise tax on cigarettes in the United States is well below those in many other industrialized nations. 
The cigarette taxes vary from state to state in the United States. For example, South Carolina has a cigarette taxes of only 7 cents per pack, while Rhode Island has a cigarette tax of $2.46 per pack. In Alabama, Illinois, Missouri, New York City, Tennessee, and Virginia, counties and cities may impose an additional limited tax on a price of cigarettes. 
Some nations are reluctant to increase tobacco taxes because they fear the reduction of tobacco tax revenues and increase in smuggling.
Restrictions on cigarette advertising
Several Western countries have also put restrictions on cigarette advertising. In the United States, all television advertising of tobacco products has been prohibited since 1971. In Australia, the Tobacco Advertising Prohibition Act 1992 prohibits tobacco advertising in any form, with a very small number of exceptions (some international sporting events are excepted, but these exceptions will be revoked in 2006). Other countries have legislated particularly against advertising that appears to target minors.
- Main article: Tobacco packaging warning signs
Some countries also impose legal requirements on the packaging of tobacco products. For example in the countries of the European Union, Turkey, Australia and South Africa, cigarette packs must be prominently labelled with the health risks associated with smoking . Canada, Australia and Brazil have also imposed labels upon cigarette packs warning smokers of the effects, and they include graphic images of the potential health effects of smoking. Cards are also inserted into cigarette packs in Canada. There are sixteen of them, and only one comes in a pack. They explain different methods of quitting smoking. Also, in the United Kingdom, there have been a number of graphic NHS advertisements, one showing a cigarette filled with fatty deposits, as if the cigarette is symbolising the artery of a smoker.
- Main article: Smoking ban
Some jurisdictions impose restrictions on where smoking is allowed. Several European countries such as the Republic of Ireland, Norway, Sweden, Italy, Spain and Scotland have legislated against smoking in public places, often including bars and restaurants. Similar bans will also take effect in the rest of the UK at various intervals (Northern Ireland and Wales from 02 April 2007, and England from summer 2007). In the United States, many states prohibit smoking in restaurants, and some also prohibit smoking in bars. In New Zealand and Australia smoking is banned in all public places, including bars and restaurants.
See the List of smoking bans article for a full list of restrictions in various areas around the world.
- Other forms of tobacco use:
- Other forms of smoking:
- Cigarette packet warning signs
- Nicotine withdrawal
- Pack year
- Prenatal exposure
- Schizophrenia - Sensory gating
- Smoking culture
- Smokeless tobacco
- Smoking cessation
- Smoking fetish
- ↑ Genetic risk assessment in hookah smokers.
- ↑ Carbon monoxide fractions in cigarette and hookah (hubble bubble) smoke.
- ↑ Water-Pipe (Narghile) Smoking: An Emerging Health Risk Behavior
- ↑ Nicotine and the Brain
- ↑ The effects of cigarette smoking on overnight performance
- ↑ ProCon.org - Addiction Chart
- ↑ AADAC | Truth About Tobacco - Addiction
- ↑ Cigarette addiction faster than expected. The London Free Press (August 2, 2006).
- ↑ Behind the Smokescreen: Tobacco Marketing to Kids
- ↑ Tobacco advertising and promotion
- ↑ Urberg KA, Shyu SJ, Liang J. Peer influence in adolescent cigarette smoking. Addict Behav. 1990;15(3):247-55. PMID 2378284.
- ↑ Peer presure to smoke: the meaning depends on the method
- ↑ The predictors of adolescent smoking
- ↑ Ethnic differences in correlates of adolescent cigarette smoking.
- ↑ ACS article on Cigarette Smoking
- ↑ Greenhouse Systems for the Production of Tobacco Seedlings
- ↑ The Economic Impact of Tobacco Production in Appalachia
- ↑ CDC: Smoking Rates Decline in the U.S. (11/10-6)
- ↑ Changes in smoking prevalence in Russia, 1996–2004
- ↑ Crumley, Bruce.Can Europe Give up the Habit? Time Magazine (January 5, 2003).
- ↑ Parental Smoking Cessation and Adolescent Smoking
- ↑ Home smoking restrictions and adolescent smoking
- ↑ Effect of viewing smoking in movies on adolescent smoking initiation: a cohort study.
- ↑ Viewing tobacco use in movies: does it shape attitudes that mediate adolescent smoking?
- ↑ The Incidence and Context of Tobacco Use in Popular Movies from 1988 to 1997
- ↑ Back to the Future: Smoking in Movies in 2002 Compared With 1950 Levels
- ↑ Turner to ax smoking scenes from cartoons
- ↑ Depression and the dynamics of smoking. A national perspective
- ↑ Smoking, smoking cessation, and major depression
- ↑ Smoking and major depression. A causal analysis
- ↑ Cigarette smoking and major depression.
- ↑ Nicotine, negative affect, and depression.
- ↑ Biological Aspects of the Link between Smoking and Depression
- ↑ Swan GE, Carmelli D, Rosenman RH, et al. Smoking and alcohol consumption in adult male twins: genetic heritability and shared environmental influences. J Subst Abuse. 1990;2(1):39-50. PMID 2136102
- ↑ 35.0 35.1 Doll R, Peto R, Boreham J, Sutherland I (2004). Mortality in relation to smoking: 50 years' observations on male British doctors. BMJ (British Medical Journal) 328 (7455): 1519-1527. PMID 15213107.
- ↑ Nicotine
- ↑ Smoking and Teens, Canadian Lung Association, Newspaper articles, Canada, Canadian Cancer Society
- ↑ Allan Rock announces collaborative research initiative on smoking
- ↑ Longmore, M., Wilkinson, I., Torok, E. Oxford Handbook of Clinical Medicine (Fifth Edition) p. 232
- ↑ Scientific American, June 2006, p. 24; "Body Blazes" by Lisa Melton 
- ↑ Smoking and Parkinson's and Alzheimer's disease: review of the epidemiological studies.
- ↑ Almeida OP, Hulse GK, Lawrence D, Flicker L (2002). Smoking as a risk factor for Alzheimer's disease: contrasting evidence from a systematic review of case-control and cohort studies. ADDICTION 97 (1): 15-28. PMID 11895267.
- ↑ Ott A, Slooter AJ, Hofman A, van Harskamp F, Witteman JC, Van Broeckhoven C, van Duijn CM, Breteler MM (1998). Smoking and risk of dementia and Alzheimer's disease in a population-based cohort study: the Rotterdam Study. LANCET 351 (9119): 1840-1843. PMID 9652667.
- ↑ Tyas SL, White LR, Petrovitch H, Webster Ross G, Foley DJ, Heimovitz HK, Launer LJ (2003). Mid-life smoking and late-life dementia: the Honolulu-Asia Aging Study. NEUROBIOLOGY OF AGING 24 (4): 589-596. PMID 12714116.
- ↑ Effective Tobacco Control Measures
- ↑ Surgeon General Warns of Secondhand Smoke
- ↑ Particulate matter from tobacco versus diesel car exhaust: an educational perspective
- ↑ Mortality in relation to smoking: 50 years' observations on male British doctors -- Doll et al., 10.1136/bmj.38142.554479.AE -- BMJ (See above). URL accessed on 2005-12-18.
- ↑ Native Americans Speak Out on Sacred Healing and Transformational Rituals
- ↑ Early Uses of Indian Tobacco in California
- ↑ Updated status of the WHO Framework Convention on Tobacco Control
- ↑ Cigarettes Cost U.S. $7 Per Pack Sold, Study Says
- ↑ Study: Cigarettes cost families, society $41 per pack
- ↑ Reducing Tobacco Use: A Report of The Surgeon General
- ↑ Higher cigarette prices influence cigarette purchase patterns
- ↑ Cigarette Tax Burden - U.S. & International - IPRC
- ↑ State Tax Rates on Cigarettes
- ↑ N.J. cigarette tax increase falls short for Cancer Society
- ↑ Tobacco Advertising Prohibition Act 1992. URL accessed on 2005-12-18.
- ↑ Tobacco - Health warnings Australian Government Department of Health and Ageing. Retrieved 28 August 2006.
- ↑ Public Health at a Glance - Tobacco Pack Information
- Boffetta, P., Agudo, A., Ahrens, W., Benhamou, E., Benhamou, S., Darby, S.C., Ferro, G., Fortes, C., Gonzalez, C.A., Jockel, K.H., Krauss, M., Kreienbrock, L., Kreuzer, M., Mendes, A., Merletti, F., Nyberg, F., Pershagen, G., Pohlabeln, H., Riboli, E., Schmid, G., Simonato, L., Tredaniel, J., Whitley, E., Wichmann, H.E., Saracci, R. 1998. Multicenter case-control study of exposure to environmental tobacco smoke and lung cancer in Europe. J. Natl. Cancer Inst. 90:1440-1450.
- Borio, G., 2006. The Tobacco Timeline. Tobacco.org.
- Centers for Disease Control and Prevention (CDC). 2004. History of the 1964 Surgeon General's Report on Smoking and Health. 
- James I of England. 1604. A Counterblaste to Tobacco.
- Joint Committee on Smoking and Health. Smoking and health: physician responsibility; a statement of the Joint Committee on Smoking and Health. Chest 1995; 198:201- 208
- Osvaldo P. Almeida, Gary K. Hulse, David Lawrence and Leon Flicker, "Smoking as a risk factor for Alzheimer's disease: contrasting evidence from a systematic review of case-control and cohort studies," Addiction, Volume 97, Issue 1, Page 15 - January 2002.
- Iain Gately: La Diva Nicotina. The Story of How Tobacco Seduced the World (2001) (ISBN 0-7432-0812-9).
- David Krough: Smoking: The Artificial Passion (Freeman, 1992) (ISBN 0-7167-2347-6).
- G Invernizzi et al., Particulate matter from tobacco versus diesel car exhaust: an educational perspective. Tobacco Control 13, S.219-221 (2004)
- Ian Tyrrell;Deadly Enemies: Tobacco and Its Opponents in Australia (1999)
- John C. Burnham, Bad Habits: Drinking, Smoking, Taking Drugs, Gambling, Sexual Misbehavior, and Swearing in American History, New York University Press, 1993
- Jordan Goodman, Tobacco in History: The Cultures of Dependence, Routledge, London, 1993
- Richard Kluger, Ashes to Ashes, 1996, on smoking in U.S.
- Robin Walker, Under Fire: A History of Tobacco Smoking in Australia, Penguin, Ringwood, 1984.
- David Harley, "'The Beginnings of the Tobacco Controversy: Puritanism, James I, and the Royal Physicians'", Bulletin of the History of Medicine, vol. 67, Spring 1993, pp. 28-50
- Vintage Celebrity Smoking Ads
- The Tobacco Timeline by Gene Borio
- Legacy Tobacco Documents Library (LTDL). URL accessed on November 8, 2005. 7 million documents related to advertising, manufacturing, marketing, sales, and scientific research of tobacco products.
- CBC Digital Archives - Butting Out: The Slow Death of Smoking in Canada
- The Social History of Smoking, by G. L. Apperson, 1914, from Project Gutenberg
Prevention and self help
- Tobacco Information and Prevention Source (TIPS) from the U.S. Centers for Disease Control and Prevention
- 5-day plan for quitting from the U.S. Surgeon General
- ButtOut.ca - Stop Smoking Articles, News, and Facts
- Stop Smoking Tips and Quit Smoking Help
- NHS UK website on giving up smoking
- Smoking Cessation Drugs
- The Quitline (Australia - Victoria)
- The Health Consequences of Involuntary Exposure to Tobacco Smoke
Smokers' rights sites
Statistics and studies
- Setting the Record Straight: Secondhand Smoke is a Preventable Health Risk
- New Surgeon General’s Report Focuses on the Effects of Secondhand Smoke
- Health Canada - Smoking Rates in Canada at Lowest Ever
- Total adult smokers by country
- Surgeon General's report on “The Health Effects of Secondhand Smoke”
- A summary of the IARC report by GreenFacts.
- Why Smokers Feel Good
- Smokers' blindness risk 'doubled' — BBC News
- Physicians for a Smoke-Free Canada
- Smoking behaviour among university students
- Collection of Anti-Smoking TV Commercials
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