I started smoking when I was 15 and a half, I was diagnosed with Crohns when I was 16. I never linked the two until a couple years ago. I stop smoking completely on Sept 8th 2009 (2 months ago today!! go me!), I haven't felt any better. While I believe smoking brought on my Crohns, stopping smoking hasn't help me at all. My GI said young females who have Crohns and stop smoking have the highest success rate for remission....I guess I missed the boat.