Serum salivary isoamylase levels in patients with anorexia nervosa, bulimia or bulimia nervosa.

Salivary isoamylase levels were studied in a sample of 35 women with bulimia, anorexia nervosa, or bulimia nervosa. Salivary isoamylase elevation was related to the presence of sham eating, evidenced by elevated isoamylase values in patients with bulimia nervosa or bulimia, and depressed isoamylase values in patients with anorexia nervosa. Salivary isoamylase levels may provide insight and have bearing on the functional interrelationship between appetite regulation and ingestive behavior in patients with eating disorders, as abnormalities may occur during both the cephalic as well as the oral phase of eating.