After 14 years as a digestive health coach, I can tell you this and I don’t say it lightly: Stop wasting your money on food sensitivity tests.
I used to run these tests with clients myself, hoping to identify which foods were driving their inflammation. But I stopped because the accuracy is questionable, and here’s the real problem: when your gut is leaky, everything you eat can get flagged as a sensitivity. The test isn’t finding your triggers. It’s just detecting an inflamed gut lining and pinning the blame on your plate.
The Real Cost of Food Sensitivity Tests
It’s not just the price of the test. It’s what happens after.
Food sensitivity tests hand people a long list of foods to fear and food fear is already rampant among anyone with digestive issues.
Here’s the irony: fearing a food can make you more likely to react to it. Fear lowers stomach acid, disrupts digestive secretions, and pulls your body out of the state it needs to be in to digest well. So the test that was supposed to help you heal ends up making digestion harder.
Instead of building a list of everything you can’t eat and everything that might hurt you, the better question is: what foods will actually support your healing? What feeds the bacteria that lower inflammation and protect your gut environment?
“But I React to Everything”
If this is you, I want to reframe something important: this usually isn’t a food sensitivity issue. It’s an immune and nervous system issue.
Your body hasn’t lost the ability to digest food, it’s lost its sense of safety. And the way back isn’t a stricter elimination list. It’s teaching your body to expand its definition of what’s safe.
How do you do that?
Step one: start thinking of food as safe. Not the enemy. Not the cause of your suffering. Something to strategically add back in. This paradigm shift sounds simple, but it’s the foundation everything else builds on because digestion doesn’t start in your stomach. It starts in your mind.
Your mind is half of your nervous system, and it’s the first step in the digestive process. When a meal looks appetizing, your body starts producing digestive juices and shifts into rest-and-digest mode. When you start a meal in fear, you send yourself straight into fight-or-flight and fight-or-flight was never designed to help you digest.
What I Recommend Instead: A Biome Test
If you want real answers about what to eat, I recommend a biome test with food recommendations not a food sensitivity test that strips your diet of the fiber and nutrients you actually need to heal.
I use different biome tests depending on where a client lives: Tiny Health for clients in the US, and Biome Sight for clients outside it. Tiny Health goes further than a standard test: it makes specific food recommendations based on what’s missing in your biome, and it flags overgrowths and pathogenic species directly.
Compare that to the GI-MAP, which does measure beneficial and opportunistic bacteria but a biome test goes deeper. It grades the diversity of your ecosystem against a healthy population baseline and gives you a roadmap for improving it, not just a snapshot of what’s wrong.
Biome + Nervous System: The Real Formula for Recovery
In my practice, working with the biome and the nervous system together is the formula that gets people well because these two systems are constantly shaping each other.
Your biome influences your mood and cognition more than most people realize contributing to anxiety, depression, and brain fog when it’s out of balance. And your nervous system, your stress levels, your sleep, your lifestyle, directly affects the pace and success of your biome’s recovery. You can’t fully fix one without supporting the other.
The One Thing to Take Away
If you take just one thing from this post, let it be this: food fear will not get you to a healed gut. But understanding the exact landscape of your unique gut ecosystem will show you exactly what decisions to make for your body, what to feed, and what overgrowths to tackle.
If You Still Want to Test for Sensitivities
The most accurate way to identify a true food sensitivity isn’t a lab test but an elimination diet. Remove suspect foods for at least 14 days (30 is even better), then reintroduce one food at a time, spaced three days apart, and pay attention to how your body responds.
You may need support to do this well and getting the support you need can increase your odds of success.
Know your ecosystem. Feed it well. Get support when you need it. And let your body, not a lab report, tell you what it can and can’t handle.
