Introduction. The prevalence of overweight and obesity among students is steadily increasing. Objective — to study actual nutrition, eating behavior, and sociomedical risk factors in students with different body weights. Materials and methods. Examinations were made in groups of 18—20-year-old students with body weight disorders: 1) 296 overweight persons; 2) 80 obese ones. The criteria for inclusion of students in the study groups were a body mass index (BMI) of 25.0—29.9 and over 30 kg/m2, respectively; the exclusion criteria were secondary obesity. A comparison group consisted of 275 students with BMI ≤25 kg/m2. The investigators estimated actual nutrition by frequency analysis, the body composition, the type of eating behavior, the quality of life; and sociomedical factors. The significance of differences was assessed using Student’s t-test, Mann—Whitney U test and determining 95% confidence interval (CI) and odds ratios. Results. The body composition of obese students had the high values of body fat mass (20.8±0.7 kg) and relative body fat mass (27.03%). The highest actual caloric intake was determined for obese students (2660.8±120.2 kcal/day for boys; 2409.5±95.5 kcal/day for girls). The diets of all the examinees were noted to contain high levels of mono- and disaccharides. Impaired eating behaviors were detected in 75.8% of the students with overweight, in 89.8% of those with obesity, and in 82.1% of those with normal weight. The most common type of eating behavior was restrictive in the students with abnormal body weight. Comparative analysis of quality-of-life scales in students with BMI ≤25 kg/m2 revealed statistically significantly higher scores for indicators, such as physical (95 [82; 101], p=0.002) and emotional (74 [62; 87], p=0.002) functionings, as well as total score (85 [74; 97], p=0.003).