These Tests Tell You Which Foods to Avoid. Do They Work?

Some tests claim to determine your sensitivity to hundreds of foods and ingredients by measuring the “bioresonance” of your hair, an unproven technique used in holistic or complementary medicine that involves measuring the energy wavelengths coming from your body. Other tests measure the levels IgG antibodies in your blood.

There are also other tests that can be done. AlcatAnd MRTA blood draw is required to test for allergies. It measures how your blood cells react to food extracts.

Other than the breath tests that gastroenterologists sometimes use to diagnose certain intolerances, like those to lactose or fructose, there aren’t validated tests for food intolerances or sensitivities, said Tamara Duker Freuman, a registered dietitian at New York Gastroenterology Associates in New York City. You can only determine if you are sensitive by observing how your symptoms change after eliminating certain foods and ingredients. This should be done with the help of a registered physician or dietitian.

This can be a slow process that involves trial and error. Companies selling food-sensitivity testing products market them as a shortcut. Medical organizations, including those in the United States, EuropeAnd CanadaWe have advised against the use of food intolerance or sensitivity tests. no good evidenceThey work.

“There isn’t anything in your hair that would tell you anything about your sensitivity to food,” Dr. Kelso said. And the antibodies measured in the IgG tests are produced as part of the immune system’s normal response to foods; they haven’t been shown to correlate with symptomsOr intolerances, Dr. Stukus said. “It’s really just a reflection of what you’ve eaten.”

Dr. Kelso explained that blood cells react differently to food extracts in a test tube than they do in the body. He said that none of these tests has been subject to the high-quality clinical trials required to prove their usefulness to patients. (Oxford Biomedical Technologies is the company that sells the blood cell MRT test. They did not respond to a request.

Source: NY Times

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