Health Smoking and Ulcerative Colitis: A Surprising Link by Dr Natalie Singh - Health Editor September 13, 2025 by Dr Natalie Singh - Health Editor September 13, 2025 Smoking helps oral bacteria settle in the gut, protecting against colitis but not Crohn’s disease. This mechanism could inspire safer treatments. A research team led by Hiroshi ohno at the … 0 FacebookTwitterPinterestEmail