Likewise, the European Society for Paediatric Gastroenterology, Hepatology, and Nutrition (ESPGHAN) recommended in 2008 that complementary foods should be introduced between 17 and 26 weeks. The group also recommended against the avoidance or late introduction of allergenic foods such as wheat, fish, egg, and peanut (J. Pediatr. Gastroenterol. Nutr. 2008;46:99–110).
Most allergic reactions to foods (90%) are due to eight food types: milk, eggs, peanuts, tree nuts, fish, shellfish, soy, and wheat. However, studies generally have not supported a protective effect for a maternal exclusionary diet during pregnancy; a diet excluding cow's milk, eggs, peanuts, and fish has not been found to protect against the development of atopic disease in infants.