Extract
Tobacco
For centuries the leaves of the tobacco plant have been used for making smoking tobacco and chewing tobacco. Tobacco contains small amounts of nicotine, a stimulant that acts on the heart and other organs and the nervous system when tobacco is inhaled, ingested, or absorbed. Nicotine's effect on the nervous system causes people to become addicted to it, and the stimulating effects make smoking and chewing tobacco pleasurable. Concentrated amounts of nicotine are poisonous, however. Although the use of tobacco was condemned on occasion in the past, not until the latter half of the twentieth century were concerted efforts made to curb tobacco use in the United States.HistoryBefore the arrival of Europeans in America, Native Americans were growing and harvesting tobacco to be smoked in pipes. Europeans exploring America learned of this practice and took tobacco seeds back to Europe where tobacco was grown and used as a medicine to help people relax. European physicians believed that tobacco should be used only for medicinal purposes. Commercial production of tobacco began in the colony of Virginia in the early seventeenth century where it soon became an important crop. The expansion of tobacco farming, especially in the southern colonies, contributed to the demand for and practice of SLAVERY in America. Most tobacco grown in the American colonies was shipped to Europe until the Revolutionary War, when manufacturers began using their crops to produce chewing and smoking tobacco.The use of tobacco for other than medicinal purposes was controversial: the Puritans in America believed that tobacco was a dangerous narcotic. Nevertheless, chewing and smoking tobacco became increasingly popular. Cigars were first manufactured in the United States in the early nineteenth century. Hand-rolled cigarettes became popular in the mid-nineteenth century, and by the 1880s, a cigarette-making machine had been invented. In the twentieth century tobacco use, especially cigarette smoking, continued to expand in the United States.By the 1960s, however, scientists had confirmed that smoking could cause lung cancer, heart disease, and other illnesses. Some cigarette manufacturers reacted to these findings by reducing the levels of nicotine and tar in their cigarettes, but the medical community established that these measures did not eliminate the health risks of smoking. Subsequently, extensive research linked cigarette smoking and tobacco chewing to many serious illnesses.In 2001, the American Lung Association estimated that over 400,000 deaths per year in the United States were direc...See the full content of this document
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