ALCAT Test results were the base for elimination diet treatment in several ailments regarded as the result of food allergy (intolerance) in 72 patients (45 children and 27 adults). The best results were achived in arthritis, urticaria, bronchitis, gastroenteritis (83%, 75%, 70% of improvement in treated patients respectively). Worse results were observed in children hypereactivity, rhinitis and atopic dermatitis (32%, 47%, 49% of improvement respectively). Less satisfactory effects of the elimination diet treatment based on the ALCAT Test results in the two latter diseases may result from the considerable involvement of IgE-mediated mechanism in the pathology of the skin and nose, which are under a great influence of external environmental factors other than food. In 57% of patients skin prick tests were positive (in 35% with inhalants and foods, 12% with inhalants only, in 9% with foods only).