Beginning of Essay
There are many things today which cause us harm. One can spend virtually an entire day listing the hazards faced by modern society. However, none of these hazards are as deadly as a habit millions of American's bring on themselves twenty to thirty times a day. ....

Middle of Essay
.... deleterious health effects of tobacco smoking have long been recognized. As early as the 19th century, isolated reports were circulated that cigar and pipe smoking caused cancer of the mouth. It was not until the 20th century--in fact, until 1950--that firm evidence was established that lung cancer was directly related to cigarette smoking. Lung cancer is now the most common cause of cancer deaths in men of most Western countries. Because cigarette smoking became a popular and fairly widespread habit among men during World War II and because this disease has a long latency period, the rise in the incidence of lung cancer during the second part of the ....