Food intolerance
Food intolerance
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Last reviewed 5 June 2020
Summary
Some people complain of symptoms after eating like headaches, bloating or mouth ulcers that are not caused by allergies. Some of these result from enzyme deficiencies or food intolerance. Allergy testing is no use in diagnosing food intolerance and unorthodox tests that claim to help diagnose intolerance are best avoided due to lack of reliability.