What is the role of smoking in the etiology of inflammatory bowel disease (IBD)?

Updated: Apr 10, 2020
  • Author: William A Rowe, MD; Chief Editor: BS Anand, MD  more...
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The risk of developing ulcerative colitis is higher in nonsmokers and former smokers than in current smokers. The onset of ulcerative colitis occasionally appears to coincide with smoking cessation; however, this does not imply that smoking would improve the symptoms of ulcerative colitis. There has been limited success with the use of nicotine patches. Crohn disease patients have a higher incidence of smoking than the general population, and smoking appears to lessen the response to medical therapy.

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