Title: The relationship between eating habits and anthropometric values in high school-age youth. Objectives: To examine the relationship between unbalanced dietary habits and anthropometric measurements considering gender and place of residence, and to investigate differences in anthropometric measurements between individuals with balanced and unbalanced diets. Study Design: Cross-sectional study. Patients and Methods: The study involves students from three high schools in Osijek. The study includes students of both genders aged 17 to 19 years. A total of 104 participants were involved, including 34 male and 70 female participants. Participants voluntarily took part in the study and provided informed consent. Results: The results show that the median of all anthropometric values of the adolescent subjects in this study is within the reference values. The foods most often consumed during the week are meat, especially chicken, and fruit, while the least frequently consumed is fish, followed by vegetables. All subjects consume sufficient amounts of phosphorus, chlorine and fat, while women do not carry enough iron, protein and fruit. The age of the subjects and the value of the body mass index are not significantly related to the intake of energy, nutrients and the type of food. The higher the waist/hip ratio, the higher the cholesterol, iodine, proteins, nitrogen, vitamin B12, zinc, saturated fatty acids, and the higher the intake of meat and meat products. Mean systolic pressure values are higher if there is more cholesterol, carbohydrates-lactose, if the intake of alcoholic beverages is higher, and the intake of milk and dairy products is higher. Conclusion: Research shows that the eating habits of adolescents significantly affect anthropometric values. Body mass index is not relevant for assessing the quality of nutrition, while eating habits significantly affect blood pressure and waist to hip ratio.