Hazards Of Smoking

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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 20th century was expected. In the late 20th century, in many countries, as many as one-third of all cancer deaths in men and 10 percent of those in women are attributed to cigarette smoking. As the current trend of males to give up smoking continues, the male percentage will decline. Less optimistically, however, increasingly more women picked up the habit in the 1950s and '60s; the proportion of women dying from a tobacco-related cancer thus was increasing. Women who smoke during pregnancy are ...

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