Nutrition is an important factor that has a special impact on a healthy and sick person, and proper nutrition plays a large role in preventing various kinds of diseases, creates favorable conditions for the normal functioning of the gastrointestinal tract, liver, heart, nervous system and p. Medical, or dietary, nutrition is of great importance in modern medicine. It is based on nutritional physiology, writing technology, food hygiene, biochemistry, and vitaminology. Proper use of therapeutic nutrition gives a positive result. However, unauthorized use of diets without the knowledge of a doctor is not recommended.