A member asked:

I'm 24 and quit smoking today. when will cotinine be out of my system? and the effects of smoking reverse themselves or is it to late? smoked 6 years

A doctor has provided 1 answer

As soon as 20 minute: Look at this site from the American Lung Association http://www.lung.org/stop-smoking/i-want-to-quit/benefits-of-quitting.html You begin to improve in 20 minutes but some things take time - 15 years to have normal cardiac risks.

Answered 4/4/2016

1.4k views

Thank

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