how long does it take the lungs to turn back to pink after stopping smoking.

Hello, and thank you for sharing your question with the community.  I'd love to give you some helpful information about that.

I will need more specifics in order to give you more detailed advice however.  The most important thing is, how long you have been smoking.  That determines everything.  It will take longer for lungs to clear after 10 years of smoking than 5 years of smoking. It also depends on how often during that time period you smoked and what kind of cigarettes you used.

Let me know more details and I'd love to offer a more informed answer.

Faith