I've written about this numerous times since I became a member here. It's controversial, and I make an effort not to belabour the subject. My very first brush with my rare form of IBD (offically diagnosed as Crohns, but a rare form that presents me with the absolute worst symptoms of both Crohns and Ulcerative Colitis) came about within 5 months of my quitting smoking. No symptoms prior. It went away after 2 months of treatment with high dose steroids. A decade passed. It came back, and kept me hospitalized on and off until I resumed smoking. It went away. A few years passed, and I again quit smoking. Within 5 months, my most recent bout with IBD occurred. I hadn't made the connection with smoking/quitting (shows how blind one can be to the bloody obvious). In and out of hospital, nothing was working, no diagnosis... then some patients in an IBD ward told me to try smoking... My incessant bleeding stopped within 48 hours... but this time the disease didn't go away. Then I found LDN, and my disease seemed to go into stasis.. limbo.. whatever... so I thought I'd give up smoking AGAIN. Within 1 1/2 months the bleeding resumed... I started smoking.. the bleeding stopped, and I haven't had the nerve... stupidity.. whatever... to try that again. It took me almost a year to recover from the anemia brought on by my large scale bloodloss, and I don't want to tempt fate again. Mind you, mine is a very atypical form of this disease, and I don't recommend my practices/regimen to others. Smoking will kill, no doubt about it. Unfortunately, some of the side effects of the 'legitimate' IBD drugs are no walk in the park either. Seems like you're damned if you do, and damned if you don't.