low-purine diet, a diet used as adjunct therapy for gout patients who suffer from a painful accumulation of salts of uric acid in the joints. Purine-rich foods are primary sources of uric acid. They include meat, poultry, fish, and particularly organ meats such as liver, kidney, and sweetbreads. Purine-rich foods are replaced in the diet by dairy products, eggs, and some vegetable sources of proteins. Low-purine diets should be a secondary source of treatment, with weight loss and adequate fluid intake being primary. Also called purine-restricted diet.