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Lung Cancer Health Center

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Lung Cancer - Cause

More than 8 out of 10 lung cancers are caused by smoking.3Tobacco smoke contains carcinogens-substances that cause cancer. These substances damage lung cells, and over time the damaged cells can turn into lung cancer.

The more you smoke and the longer you have smoked, the higher your chances of getting lung cancer. You lower your chances when you quit or cut down on how much you smoke.

Recommended Related to Lung Cancer

Lung Cancer Diagnosis

Your doctor may suspect lung cancer if a routine physical exam reveals: Swollen lymph nodes above the collarbone Weak breathing Abnormal sounds in the lungs Dullness when the chest is tapped Unequal pupils Droopy eyelids Weakness in one arm Expanded veins in the arms, chest, or neck Swelling of the face Some lung cancers produce abnormally high blood...

Read the Lung Cancer Diagnosis article > >

A few people get lung cancer after being exposed to other harmful substances, including asbestos, radioactive dust, radon, or radiation such as X-rays.

Cancer also may be caused by gene changes (mutations) that occur as you get older.

    WebMD Medical Reference from Healthwise

    Last Updated: November 14, 2014
    This information is not intended to replace the advice of a doctor. Healthwise disclaims any liability for the decisions you make based on this information.
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