About intolerance.app
intolerance.app is an independent resource on food intolerance, histamine, and related conditions. We exist to give people who have been struggling, often for years, a calm and honest place to understand what is happening, without being sold a test or handed another fear-list of foods.
Why we built it
GIMETRY, the team behind this resource, builds a food-symptom pattern-tracking app. It started because someone close to the founder spent months unable to work out which foods were affecting them, bounced between appointments, and kept cutting foods without getting better. That experience is common, and it is the reason this site is written the way it is: to be the resource we wished had existed, one that respects the reader and tells the truth about uncertainty.
What we believe
- Your symptoms are real. Being dismissed is not the same as being fine. We start there.
- Suspects, not verdicts. Food reactions are often delayed and dose-dependent, so the obvious suspect is frequently wrong. We help you find patterns to test and discuss with a clinician; we do not diagnose.
- Honesty about uncertainty. Where the science is contested or there is no validated test, we say so plainly. We would rather be the precise voice than the confident-sounding one.
- No test to sell. We do not sell or rely on blood tests, and we are upfront that IgG/IgG4 food panels are not recommended by the major allergy bodies for diagnosing intolerance.
- Abundance over restriction. The goal is getting foods back, not cutting more. If tracking is making eating anxious, that matters, and we route to professional help.
Who writes this
Our content is written by the GIMETRY editorial team and produced with AI assistance and human review against named medical sources. We are not doctors. When we describe how something works, we cite a named authority (NHS, EFSA, the British Dietetic Association, AAAAI, EAACI, BSACI, Monash University, SIGHI, peer-reviewed research) and link it. See our editorial policy for exactly how we research, review, and disclose. (When a named clinical reviewer is part of our process, we will name them here with their real credentials. We will never invent one.)
Our relationship with GIMETRY
We are independent, and we say so. Where this resource mentions the GIMETRY app, it is because the app genuinely helps with the next step (tracking your own patterns), and we tell you plainly that it is ours. We do not pretend to be a neutral third party reviewing it.
A note. GIMETRY is not a medical device and does not provide medical advice, diagnosis, or treatment. This site surfaces possible patterns to discuss with a qualified clinician. Always consult a doctor or registered dietitian, especially before changing your diet. This article was written with AI assistance and human review. Last reviewed: 2026-06-29.