Your gut lining replaces itself every 4 to 5 days

Claim

A NEW GUT LINING EVERY FEW DAYS

Catch

NOT A 5-DAY FIX

Verdict

FIBER AND PATIENCE

The lining of your intestine is one of the fastest renewing tissues in the body: stem cells keep dividing and replacing old cells every few days. Gut bacteria ferment fiber into butyrate, a short-chain fatty acid that helps strengthen the gut barrier. In a study of 52 healthy adults, using a footstool at the toilet was linked to less straining and more complete emptying. Fast cell turnover is routine maintenance, not a five-day cure for gut problems.

SOURCES

1. Barker (2014), Nature Reviews Molecular Cell Biology 15(1): 19-33
2. Canani et al. (2011), World Journal of Gastroenterology 17(12): 1519-1528
3. Modi et al. (2019), Journal of Clinical Gastroenterology

For information only, not medical advice.