Lung cancer is the leading cause of cancer deaths in the U.S.  Dr. Korst says there is usually an environmental risk and a genetic risk, which is why some people who've never smoked a day in their lives, get lung cancer.

<p>Lung cancer is the leading cause of cancer deaths in the U.S.&nbsp; Dr. Korst says there is usually an environmental risk and a genetic risk, which is why some people who've never smoked a day in their lives, get lung cancer.</p>

WCBS Newsradio 880: Daily Tips for Healthy Living from Steve Scott.

<p>WCBS Newsradio 880: Daily Tips for Healthy Living from Steve Scott.</p>

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