According to the National Cancer Institute, smoking currently causes 87 percent of lung cancer deaths. Even those who do not smoke directly, but inhale secondhand smoke, are affected by lung cancer. In fact, approximately 3,000 lung cancer deaths caused by secondhand smoke each year.
Chemicals
Smoking not only involves the ingestion of tobacco, but also a host of other toxic poisons. Over the years at least 43 to 60 different carcinogens have been found in cigarettes, according to the
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