关键词: 维生素D, 骨外系统疾病, 新认识

Abstract: Vitamin D is well known as an important regulator of bone metabolism.Studies show that vitamin D also involves in the occurrence and development of cardiovascular disease，immune system disease，tumor，metabolic disease and neurological disease.Compared with populations with normal vitamin D，those with vitamin D deficiency are more likely to suffer from the aforementioned diseases.As evidence demonstrates that vitamin D supplementation is beneficial to the prevent and to the improvement of the outcome of these diseases，vitamin D supplementation therapy could be used as a promising regimen.

Key words: Vitamin D, Non-skeletal diseases, New recognition