The glucose tolerance test is not reliable for evaluating most cases of suspected hypoglycemia. Low blood sugar levels without symptoms have no diagnostic significance because they occur commonly in normal individuals fed large amounts of sugar. The only way to reliably diagnose hypoglycemia is to prove that blood sugar is low whenever symptoms occur during the patient's usual living pattern. The most practical way to do this is probably with a home testing device. This is not a valid test of thyroid function.
Proper diagnosis requires blood tests that measure thyroid hormone levels.
Their treatment approach involves elimination of exposure to foods and environmental substances to which they consider the patient hypersensitive. Extreme restrictions can involve staying at home for months or living in a trailer designed to prevent exposure to airborne pollutants and synthetic substances. In many cases, the patient's life becomes centered around the treatment. Researchers at the University of California have demonstrated that these procedures are not valid. The tests were conducted in the offices of clinical ecologists who had been treating them.