6 guides
Gut health
Edited by Lena Naumovska, editor responsible for micronutrients and gut health.
The World Health Organization sets a floor of 25 grams a day. The NHS sets a UK target five grams higher. Neither number is wrong — they're answering slightly different questions, and knowing which one applies changes what "enough" actually means.
Moderate evidence18 Sept 2026
Both start with bloating, cramping, or a bad week in the bathroom. What actually separates them is a pattern doctors can name — how often, how long, and what happens on the days in between.
Strong evidence18 Sept 2026
Both words get used to sell yoghurt, capsules and fibre powders almost interchangeably. One is a population of organisms you swallow; the other is food for the organisms already living in you. That difference changes what each can plausibly do.
Moderate evidence18 Sept 2026
A number under 50 doesn't rule out every gut problem, and a number over 200 doesn't name the one you're worried about. What the test can and can't tell apart matters more than the cutoff printed on the page.
Moderate evidence18 Sept 2026
Every wellness brand claims to support it, yet none of them can point to a blood test or scan that tells you what state yours is actually in. That gap between the marketing and the measurement is the real story here.
Moderate evidence18 Sept 2026
Bloating gets blamed on specific foods more often than the evidence backs up. What actually separates a swallowed-air evening from a stomach that isn't emptying properly is timing, pattern, and what else comes with it.
Moderate evidence18 Sept 2026