Gut Health, Minus the Grift

Fibre has some of the best evidence in nutrition. The tests sold in its name fail on reproducibility.

5 steps · ~25min · tick as you go

5 steps

  1. Fibre and the Microbiome: What's Actually Established

    See the scale of the fibre evidence, and how far short of 30 g a day most people fall.

  2. Fermented Foods: What One Good Trial Showed

    Weigh one genuinely good randomised trial, and see exactly how much it does and doesn't prove.

  3. Microbiome Tests: Why Experts Say Not Yet

    Learn the finding that settles the consumer microbiome question: one sample, six providers, six answers.

  4. Bloating and IBS: The Evidence-Based Route

    Know the order guidance actually recommends, and why low FODMAP needs a dietitian.

  5. Grade the Claim

    Grade gut-health claims and see how cleanly the good evidence separates from the products sold beside it.

How this works

Nothing here is gated and nothing is new: every step is a page or a calculator already on the site, and you can jump straight to any of them. The order is the contribution, along with the last step — a round of Grade the Claim, because reading something and being able to judge it later are different skills, and only the second one survives the week.

Ticks are saved on this device. Claims you meet in the check come back on a spacing schedule, and what you know keeps the tally.

Written and reviewed by Mathew Beale, MSc Biotechnology, University of Reading.

Last reviewed: