In this thesis, we will elaborate on the topics of anorexia and bulimia nervosa and disturbed body-image. Feeding-related activities and behaviors are partly instinctive and innate, and partly acquired. They are influenced by a number of psychological, social and cultural factors. At this time, various psychosomatic problems begin to develop, which have their origins in early childhood. Immediately after the birth of a child, a special mother-child relationship develops. In the beginning, the mother is just a person who feeds and the relationship with her is not developed. After the birth of a child, the most important is the first contact between the mother and the newborn, the child reacts to the food (milk) that comes from the mother's breast. Already in the first few days of a child's life, when it is taken in his hands, it turns towards the chest of the person holding it, not distinguishing between a man and a woman. After only two months of age, the child begins to react to the presence of adults who approach him when he cries because he is hungry. As he grows older, in the first months of a child's life, the mouth plays the most important role in learning about feeding. Sucking fingers and putting hands in mouth is the first thing a baby does after birth. As he develops further, the child becomes more and more acquainted with the parts of his body. By putting the fingers or toes in his mouth, he begins to organize an image of his own body. Apart from the parts of his body, he will put everything near him in his mouth. The desire to feel accepted by the environment leads the girl to choose weight loss as the easiest way to achieve security among peers, because the obsession with slimness among young people is one of the main topics. In anorexic girls there is a great connection with the mother, with oscillations between strong attachment to rejection. The mothers of anorexic girls are usually anxious people. Such mothers are overly preoccupied with feeding their very young girls, who suck obediently and are often "fat". In adolescence, girls come for the first time to show resistance to their mother's demands. For the developmental stage in which the child tries to distance himself from the parents and confirm himself as a special and responsible person, the oppositions are completely normal. It seems that the child unconsciously finds eating precisely as the most sensitive area of opposition to his mother. In families where food is extremely important, anorexia will be the phenomenon that will upset parents the most. Social factors also influence the development of the disorder. In modern society, a slender line is propagated through the media as the highest goal and the only criterion of beauty, without taking into account health.