Do Cigarettes Cause Lung Cancer?

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Cigarette Smoke. Smoking causes 87% of lung cancer deaths, and accounts for 30% of all cancer-related deaths. Cigarettes, nicotine, or both may contribute to lung cancer in one or more of the following ways:

In general, chronic exposure to tobacco may cause an acceleration of coronary artery disease, peptic ulcer disease, reproductive disturbances, esophageal reflux, hypertension, fetal illnesses and death, and delayed wound healing.
  • The smoke is the most dangerous component of the...
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