Food allergies are sometimes blamed for such disorders as hyperactivity in children, chronic fatigue, arthritis, and depression, as well as poor athletic performance. However, these associations have not been substantiated.
Researchers estimate that at least 60% of the U.S. population suffers from unsuspected food reactions that can cause or complicate health problems. Symptoms can be extraordinarily diverse, ranging from arthritis to eczema to migraines. In extreme cases, food allergies can lead to anaphylactic shock and death if untreated. Fortunately, most people do not have severe reactions.