Key Finding: Why Fiber Causes Stomach Upset—And How to Build Tolerance

Last updated: 30/08/2026 23:29

0 Min Read

Fiber-induced stomach upset stems from rapid fermentation, not true intolerance. Microbial adaptation over 1–3 weeks resolves symptoms—even at higher fiber intakes. — Photo by cottonbro studio on Pexels (Pexels License)

1 min read|39 words

1–3 weeks: the timeline for your gut microbiota to adapt to increased fiber intake and GI symptoms to diminish—even as fiber intake rises toward therapeutic levels of 30–50 g/day. Not intolerance. Adaptation.

Read the full article on GMJ Newsroom →

Was this article helpful?

GMJ Brief · Key Finding

📰 Read the full article: Why Fiber Causes Stomach Upset—And How to Build Tolerance →

Share This Article

ByProf. Giorgi Pkhakadze, MD, MPH, PhD

Follow:

MD, MPH, PhD. Editor-in-Chief, Georgian Medical Journal (GMJ). Professor and Head, School of Public Health, David Tvildiani Medical University (DTMU), Tbilisi, Georgia. Chair, Public Health Institute of Georgia (PHIG). President, Accréditation Sans Frontières (ASF), Paris. Secretary/Treasurer, UEMS Section of Public Health. WHO Consultant, Health and Migration, Geneva. Former Member, UN Secretary-General's Independent Accountability Panel for Every Woman, Every Child, Every Adolescent (IAP-EWEC, 2016–2021). ORCID: 0000-0001-7609-4515.