system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5 I had my last cigarette on last Christmas. Has my body purged itself of all the harmful effects that my smoking had? Are there any lasting effects which will never be removed?

edit: Thanks guys for your comments. 

Here is some more Info: I am male, 24+, I was never a heavy smoker, I averaged at about a cigarette a day. I smoked for a period of about 6 years.
gpt
Congratulations on quitting!  You're already in much better shape than you would have been if you continued smoking, but some of the effects unfortunately never go away.  10 years after quitting, your risk of lung cancer will be about half that of someone who is still smoking, but it won't ever drop to the point of someone who never smoked.  On the plus side, some effects do go entirely away over time.  After 2-5 years, your risk of stroke will have dropped to the level of someone who never smoked, and after 15 years your risk of heart disease will have done the same.