By measuring IgG antibodies specific to antigenic food proteins, it is possible to identify which foods may be responsible for hard-to-define symptoms. The 93 foods tested in the IgG Food Allergy Test w/ Candida include representatives of major food groups common in the western diet.  Elimination of IgG-positive foods can improve symptoms of Fibromyalgia, irritable bowel syndrome, autism, ADHD, cystic fibrosis, rheumatoid arthritis, and epilepsy, according to numerous clinical studies.