In the diploma thesis entitled "Eating habits of medical school graduates", a study of eating habits was conducted on a sample of respondents from the Medical School in Rijeka. Eating habits have an important impact on the health of the body. Proper diet, which includes a balanced quantity and quality of food intake, consumption of fresh and from various harmful effects (pollution, pesticides, etc.) free of fruits and vegetables, fish, meat in appropriate quantities, limiting the amount of sugar, salt and fat, etc., it can improve the health of the organism, and reduce the risk of certain diseases. Developing awareness of proper nutrition in adolescents is extremely important in the prevention of various diseases at a later age (cardiovascular disease, malignant diseases, etc.). The research conducted on a sample of 74 graduates of the Medical School in Rijeka showed a positive attitude of high school graduates regarding 'healthy eating' and acceptance of proper nutrition as a way of life for high school graduates. The BMI of the respondents is 22.87, which indicates that the graduates of the Medical School in Rijeka have a normal body weight on average. The results of the survey showed satisfactory eating habits of high school graduates. Dietary deficiencies observed in the consumption of fruits and vegetables and fish. Attention should be paid to changes in eating habits during school stays, skipping meals and late dinners, and educating high school students about the harmfulness of alcoholic beverages and tobacco products. Further education and educational programs on proper nutrition and its effects on health have a preventive effect on the health of the population as a whole.