Sleep is a genetically programmed and physiological process and one of the main types of higher mental performance.
The main functions of sleep are restorative, anabolic and informative.
Sleep disorders are seen in 35-45% of the population and present a serious medical and social problem. Patients with insomnia have a higher risk of developing mental disorders, arterial hypertension, type 2 diabetes mellitus and the risk of getting into a road traffic accident. The recent studies have demonstrated a direct correlation between the reduction in sleeping hours and mortality. Insomnia is a particularly pressing problem in the elderly and actively working youth.