The author presents a review of gynaecological complications of obesity. He mentions the problem of gestation in obesity, surgical complications and hormonal abnormalities in obese women. A classical complication of obesity is sterility. Obesity is also a risk factor for a number of gynaecological tumours. The author emphasizes the importance of weight reduction in the treatment of sterility and for the prevention of gynaecological tumours. An increase of body weight must be prevented in gynaecological hormonal treatment and contraception.

        Key words: Obesity - Infertility - Gynaecologal tumours - Preventive importance of weight reduction