Story perspectives

Study Reveals Smoking May Alleviate Ulcerative Colitis Symptoms

9/14/2025

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Summary

Story summary

A study by Hiroshi Ohno at RIKEN Center in Japan suggests smoking may reduce ulcerative colitis symptoms by promoting oral bacteria in the gut.
Smoking generates metabolites that boost the growth of Streptococcus in the colon, triggering an immune response.
Potential treatments with prebiotics or probiotics could mimic these effects without the health risks of smoking.
Streptococcus mitis was found to lower inflammation in ulcerative colitis but exacerbate Crohn’s disease.
The study emphasizes the complex immune interactions in inflammatory bowel diseases, warranting further research.

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Story summary

A study by Hiroshi Ohno at RIKEN Center in Japan suggests smoking may reduce ulcerative colitis symptoms by promoting oral bacteria in the gut.
Smoking generates metabolites that boost the growth of Streptococcus in the colon, triggering an immune response.
Potential treatments with prebiotics or probiotics could mimic these effects without the health risks of smoking.
Streptococcus mitis was found to lower inflammation in ulcerative colitis but exacerbate Crohn’s disease.
The study emphasizes the complex immune interactions in inflammatory bowel diseases, warranting further research.