Hypovitaminosis D in the elderly: relationship with sarcopenia and dementia (review of literature).

The growth in the world population of elderly and senile people provokes interest in the processes and mechanisms leading to aging and age-associated diseases. Hypovitaminosis D is common in geriatric patients and has been suggested by a number of authors as a cause of diseases such as dementia and sarcopenia. This literature review is devoted to the analysis of the role of vitamin D in the development of the above diseases, their prevention and treatment.