Nutritional dyspepsia usually affects young people, but often also middle-aged people. Long-term chronic inflammation of the mucous membrane of the stomach and duodenum, gastric bleeding, bulbitis and gastritis can contribute to dyspeptic symptoms. Occurring against the background of restructuring of the intestinal mucosa, which occurs during the transition from breastfeeding to feeding with fruit juices and cow's milk, in most cases, mucosal atrophy quickly disappears.