Obesity is a condition of excessive fatness, which impaired man health. It is a result of bad proportion between energy intake and expenditure caused by unhealthy life style. Anthropometric parameter waist-to-height ratio seemed to be the most perspective diagnostic tool for quick and simple diagnosis of abdominal obesity in general population. Obesity close relationship to all metabolic syndrome components is documented by its improvement after body fat reduction. Treatment of obesity is based on weight reduction and prevention of weight regaining after weight loss. The most powerful method in obesity treatment is complex multidisciplinary approach based on medication and lifestyle intervention focused on healthier food choices and physical activity.