Smoking & Ulcerative Colitis: New Research Reveals Connection
- Researchers led by Hiroshi Ohno at the RIKEN Center for Integrative Medical Sciences (IMS) in Japan have discovered why smoking tobacco helps people suffering from ulcerative colitis, a...
- Inflammatory bowel disease (IBD) encompasses two main conditions: Crohn's disease and ulcerative colitis.
- The researchers employed a combined approach, utilizing both human clinical data and experiments with mice to arrive at their conclusions.
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Smoking’s Unexpected Link to ulcerative Colitis: The Role of gut Bacteria
Table of Contents
Understanding Ulcerative Colitis and the Smoking Paradox
Researchers led by Hiroshi Ohno at the RIKEN Center for Integrative Medical Sciences (IMS) in Japan have discovered why smoking tobacco helps people suffering from ulcerative colitis, a chronic disease typified by inflammation of the large intestine. Published in the scientific journal Gut on august 25,the study shows that smoking produces metabolites that encourage bacteria from the mouth to grow in the large intestines where they trigger an immune response. These findings imply that protection against ulcerative colitis can be achieved through prebiotics like hydroquinone or probiotic therapy with bacteria like Streptococcus mild, thus eliminating the need to smoke and all the associated risks for other diseases.
Inflammatory bowel disease (IBD) encompasses two main conditions: Crohn’s disease and ulcerative colitis. While both cause chronic abdominal pain, diarrhea, fatigue, and weight loss, their underlying causes and the specific location and nature of the inflammation differ considerably. A long-standing mystery – over 40 years – has puzzled doctors and scientists: smoking increases the risk of Crohn’s disease, yet paradoxically offers protection against ulcerative colitis. Given that both diseases involve gut inflammation, which is fundamentally an immune response, and that gut immunity is heavily influenced by the composition of gut bacteria, Ohno and his team at RIKEN IMS investigated weather the differing effects of smoking on these diseases could be explained by alterations in gut bacterial populations.
The Research: Connecting Smoking, Gut Bacteria, and Ulcerative Colitis
The researchers employed a combined approach, utilizing both human clinical data and experiments with mice to arrive at their conclusions. analysis of individuals with ulcerative colitis revealed that smokers exhibited a higher prevalence of certain oral bacteria, such as Streptococcus, in their gut, specifically within the colonic mucosa lining the intestines. This phenomenon was not observed in former smokers. Normally, these bacteria pass through the digestive system with swallowed saliva; however, smoking appears to facilitate their colonization within the gut mucosa.
The crucial question then became: how does smoking achieve this? The researchers further examined gut metabolites – small molecules produced by the body and gut bacteria