This is a really stupid question but I always wonder. I smoked socially from when I went through a bad break up aged 22 (11 years ago, was going out a lot and partying), up until I met now-DH about 10 months later. I had whole weeks where I didn't smoke at all during that time period. I always put myself down on forms as an ex-smoker but surely my risk of smoking-related diseases must be less high than an ex-smoker who gave up at say, age 35 and consistently smoked since they were 18? Any doctors or people in the know have any insight?!