Objective — to study the gender- and age-specific features of overweight and obesity in the adult population group that underwent the first stage of prophylactic medical examination in a territorial polyclinic in Krasnodar in 2015. Subject and methods. The frequency of overweight and obesity and their correlation with low physical activity (LPA) and improper nutrition (IN) in health groups in terms of gender- and age-specific characteristics among the adult population (n=2461; mean age, 43.1±17.3 years) that was attached to Krasnodar Polyclinic No. 1 and had undergone Stage 1 of prophylactic medical examination. Results. Overweight and obesity were recorded in 1149 (46.7%) examinees; LPA and IN were observed in 1321 (53.7%) and 1837 (74.6%) patients, respectively. The frequency of obesity in females and males was 26.3 and 11.3%, respectively. The mean age of obese patients was 55±16.8 years and that of normal weight persons was 41±16.6 years (p<0.001). The proportion of obese persons aged 39 to 60 years was significantly higher (44.6%); and the proportion of those aged 18—38 years was significantly lower (18.9%) than that in other age groups (χ2 =165.35; p=0.000). The patients with overweight and obesity were significantly older (51±17.6 years) than those with a body mass index (BMI) of <25 kg/m2 (36±13.7 years) (p<0.001). LPA was found in 90.7% of obese persons. This risk factor (RF) was detected significantly more often in obese persons than in normal weight ones (χ2=32.1; p<0.001). In was significantly more common in overweight and obese people than in persons with a BMI of <25 kg/m2 (p<0.001). LPA was recorded significantly more often in obese females than in males (94.5 and 80.9%, respectively; p<0.01). The frequency of IN in men and women was comparable (90.9 and 92.8%, respectively). Conclusion. The first stage of the prophylactic medical examination could detect overweight and obesity in 46.7% of people (26.3% of women and 11.3% of men). The proportion of obese people aged 39—60 years was significantly higher (44.6%) and the proportion of those aged 18—38 years was significantly lower (18.9%) than in other age groups (χ2 =165.35; p=0.000 ).