s. This occurrence is called metastasis. Metastasis has also been known to take cancers from other parts of the body and put it into the lungs. The leading cause of lung cancer is smoking. Cigarette smoke contains more than 4,000 different chemicals, many of which are carcinogens (may cause cancer). The three of the most damaging toxins are nicotine, tars, and carbon monoxide. Second-hand smoke inhaled by both smokers and nonsmokers is another important cause of lung cancer. Smoking is responsible for 90% of lung cancer deaths among men, 79% among women. Also smoking accounts for about 30% of all cancer deaths. Smokers that inhale two or more packs of cigarettes a day, have a cancer mortality rate 12-25 times greater than a nonsmokers. The risk of lung cancer falls dramatically within a couple years if smoking is stopped. Radon is the second leading cause of lung cancer. It is a radioactive gas found in the earth's rocks and soil, formed by the natural breakdown of radium. Excessive exposure of radon in the home may increase the risk of lung cancer especially in smokers. If the radon levels are found to be to high, reme

Some common words found in the essay are:
Cancer Cancer, Tom Bradly, lung cancer, Valvano Don't, Bill Clinton, risk lung, risk lung cancer, banning smoking, cause lung cancer, cause lung, lung cancer smoking, leading cause lung, cancer deaths, leading cause, cause cancer, chronic cough, abnormal cells, cancer smoking,
Approximate Word count = 758
Approximate Pages = 3 (250 words per page double spaced)