How to test for Gluten Intolerance at home

*Note* This does NOT test for Celiac Disease which is an autoimmune disease. This does NOT test for gluten allergy. This is not medical advice.

Gluten intolerance, also called gluten sensitivity, is a condition in which eating gluten—a protein found in wheat, barley, and rye—triggers uncomfortable symptoms even though celiac disease or a wheat allergy is not present. People with gluten sensitivity may experience bloating, abdominal pain, diarrhea or constipation, fatigue, brain fog, headaches, joint pain, skin issues, or mood changes after eating gluten. While it doesn’t cause the same intestinal damage as celiac disease, it can still create significant inflammation and disrupt the gut, immune system, and nervous system, which is why many people feel dramatically better when gluten is removed from their diet.

The Test:

A simple way to explore gluten sensitivity at home is to compare how your body reacts to bread in different contexts.

First, eat bread with protein and fat—like eggs and avocado—and track any symptoms for the next three days, noting digestion, energy, mood, brain fog, bloating, skin, or joint pain.

Then, on a separate test, eat plain toast by itself and again record symptoms for three days. If you feel fine when bread is eaten with protein and fat but develop symptoms when it’s eaten alone, that suggests the issue may be more about blood sugar spikes, fermentation in the gut, or how carbohydrates are processed rather than gluten itself.

If symptoms appear both times, gluten could be a contributor—but this still doesn’t fully rule it in. The next step would be testing for fructan intolerance (a type of FODMAP found in wheat), which often causes bloating, gas, and discomfort and is commonly mistaken for gluten sensitivity.