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flag Estrogen heightens gut pain in IBS by activating colon cells, worsening symptoms in women during menstrual cycles and potentially affecting men on certain medications, according to a UCSF study.

flag A University of California, San Francisco study published in Science finds estrogen increases gut pain sensitivity in irritable bowel syndrome (IBS) by activating L-cells in the colon, triggering excess PYY release and amplifying pain signals in response to gut bacteria metabolites. flag The research explains why women often experience worsened IBS symptoms during certain menstrual phases and why low-FODMAP diets help some patients. flag Estrogen’s effect was replicated in male mice given female-level estrogen, suggesting the pathway is active in both sexes, potentially affecting men on androgen-blocking medications. flag The findings reveal new drug targets for treating IBS beyond dietary restrictions.

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