John Muir Health
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Smoking is, by far, the biggest risk factor for developing lung cancer. The longer you smoke - including tobacco in any form - and the more you smoke, the greater your risk. Approximately 87 percent of all lung cancers are attributable to long-term smoking or passive exposure to smoke (also known as second-hand smoke). A non-smoker who is married to a smoker is 30 percent more likely to develop lung cancer than the spouse of a non-smoker.

It's important to note, however, that not every individual diagnosed with lung cancer has a history of smoking. Although not every cause of lung cancer is known, the disease seems to be associated with the following risk factors:

We are here for education, support and to help you navigate your way through your diagnosis, treatment and recovery.

Call (925) 947-3322.

If you stop smoking before a cancer develops, you significantly reduce your risk of developing lung cancer. However, former smokers remain at greater risk for lung cancer than people who have never smoked.

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