Renee from Ipswich, Queensland, Australia asked:

Does quitting smoking cause lung cancer?

Cigarettes and lung cancer

I've read that quitting smoking may cause lung cancer due to the lungs repairing. Is this true?

The source:
Our answer

No. Quite the opposite. Quitting smoking, or better still not taking it up, is the best thing you can do to reduce your risk of developing lung cancer. Around 80% of all lung cancer deaths are the direct result of tobacco smoking. There is no evidence that quitting smoking can cause lung cancer. In fact, the body starts repairing the damage caused by smoking from the day a person quits. Quitting at any age will improve your health; the greatest benefits are experienced by those who quit smoking earlier in life. For most people, quitting smoking will halve their risk of lung cancer after 10 years. The body of scientific evidence is clear that smoking is far and away the leading cause of lung cancer. In Australia smoking causes approximately 80% of lung cancers. There is no credible evidence that quitting smoking could in cause lung cancer. In fact, the body starts repairing the damage caused by smoking from the day a person quits. Quitting at any age will see benefits but the greatest benefits are experienced by those who quit smoking earlier in life. For most people who quit their risk of lung cancer is halved after 10 years.

This page was last updated on: July 9, 2014
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