Vitamin D and senile osteoporosis.

At present, the vitamin D deficiency has become a worldwide problem. In recent years, many studies have observed that there are different levels of vitamin D deficiency in many countries, and elderly people have become high-risk group of vitamin D deficiency because of dietary factors, decreased outdoor activities, decreased gastrointestinal absorption, and decreased kidney function etc. At present, research conclusion is mostly from abroad. It is necessary to study vitamin D and its related factors in different populations in China. The purpose of this paper is to discuss the relationship between vitamin D and osteoporosis in the elderly, and to provide theoretical basis for the prevention and treatment of osteoporosis in the elderly. [ABSTRACT FROM AUTHOR]