The results of research on the state of lipid peroxidation (LPO) and the evaluation of the antioxidant status in 135 men aged 14 to 55 years with obstructive disorders of breathing during sleep (ONDS). The patients were divided into 4 age groups: 14-17 years, 18-22 years, 23-45 years and 46-55 years. Noting the relationship between the duration of hypoxia in ONDS the stages of adaptation to this pathological condition.