Tobacco is an agricultural product processed from the fresh leaves of plants in the genus Nicotiana. Nicotiana tabacum is the most commonly grown. These leaves are harvested and cured to allow for the slow oxidation and fermentation of the tobacco leaf. This produces certain compounds in the tobacco leaves which can be attributed to sweet hay, tea, rose oil, or fruity aromatic flavors. Before packaging, the tobacco is often combined with other additives in order to: enhance the addictive potency, shift the products pH and improve the effects of cigarrette smoke by making it more palatable. In the United States these additives are limited to 599 substances. The product is then processed, packaged, and shipped to consumers. Tobacco is an agricultural product processed from the leaves of plants in the genus Nicotiana. In consumption it most commonly appears in the forms of smoking, chewing, snuffing, or dipping tobacco. Upon the arrival of Europeans in North America, it quickly became a trade item and a recreational drug. This popularization led to the development of the southern economy of the United States until it gave way to cotton. Following the American Civil War, a change in demand and a change in labor force allowed for the development of the cigarette. This new product quickly led to the growth of tobacco companies. There are many species of tobacco, which are all encompassed by the plant genus Nicotiana. The word nicotiana (as well as nicotine) is named in honor of Jean Nicot. Because of the addictive properties of nicotine, tolerance and dependence develop. The usage of tobacco is an activity that is practiced by some 1.1 billion people, and up to 1/3 of the adult population. The World Health Organization reports it to be the leading preventable cause of death worldwide and estimates that it currently causes 5.4 million deaths per year. Rates of smoking continue to rise in developing countries.
Smoking is a deadly habit to support. Diseases that have been the number one killer of men and women in the U.S.A. is cardiovascular diseases. Cardiovascular diseases have many causes, but smoking alone is a high risk to catch one. Non-smokers also have to pay attention to the air they are breathing because the smoke around them can kill!
Smoking is very bad for you, heres what it can do to your body
Lungs Lungs before and after teeth
The Health Risks of Smoking According to Global Smoking Statistics, 80,000 to 100,000 youths start smoking everyday. Smoking is everywhere, in shops, restaurants and malls. Smoking Studies of ex-smokers show that their risk of dying from smoking-related disease decreases with each year of not smoking. Because of this, more than 40 million people in the U.S. quit smoking in the past year alone.
My opinion on smoking is that its a stupid and pointless habit and expensive to support. It's like paying to die sooner, and not like five bucks but like hundreds of thousands of dollars by the time you kick the bucket.
Information derived from wikipedia and other internet sources