Smoking causes about 85% to 90% of lung cancers. One of the best ways to prevent lung cancer is to quit smoking and minimize your exposure to second-hand smoke (second-hand smoke can raise the risk of lung cancer even if you don't smoke).

There are a few other things you can do to help reduce your risk of lung cancer:

  • Minimize your exposure to air pollution, asbestos, radon, arsenic, tar, and soot. Consider having your home tested for radon.
  • Be physically active (the Canadian Physical Activity Guidelines recommend at least 150 minutes of moderate- to vigorous-intensity aerobic physical activity per week, in intervals of 10 minutes or more).
  • Drink alcohol in moderation:
    • no more than 2 drinks per day (or no more than 3 drinks on special occasions), to a maximum of 10 drinks per week for women
    • no more than 3 drinks per day (or no more than 4 drinks on special occasions), to a maximum of 15 drinks per week for men
  • Eat a diet rich in fruits and vegetables.

If you're concerned about your risk of lung cancer, speak to your doctor to learn more about lung cancer prevention and screening.