This paper will present the results of a study on dietary habits in adolescents. The high school or adolescent era is a time of great physical and psychological changes, which cause instability and oscillations in the mood and behavior of high school students. Results obtained by interviewing secondary school students about eating habits and results obtained using a standardized questionnaire for the risk of type 2 diabetes were analyzed using a reliable statistical tool IBM SPSS Statistical, which offers a range of reliable analyzes and statistical tests. Previous research has shown that for each person with type 2 diabetes, one person finds out who does not know it. Discovery of pre-diabetes, in new potential patients, is necessary at the earliest age, when a number of factors affect lifestyles, such as irregular nutrition and obesity, physical inactivity, stress, and others become important for the development of this disease. Detection of risk levels in potential patients is important for both the individual and public health, and everyday clinical practice. After determining the degree of risk for a particular sample, a set of measures for a particular adolescent population will be recommended, so that the disease does not occur, or its onset will move for a later period of life.