Vitamin D is a steroid hormone, it can affect cardiomyocytes, endothelial cells, vascular smooth muscle cells and inflammatory cells by binding to the vitamin D receptors, and then can play the following roles: inhibit cardiac hypertrophy, protect vascular endothelium, regulate inflammatory reaction, which will reduce the risk of cardio-cerebrovascular diseases and improve the patients' prognosis. Vitamin D deficiency may increase the risk of death in stroke patients. However, the relationship

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... etween vitamin D supplements and the prognosis of patients with cerebrovascular disease is still uncertain. This paper reviewed the research progress of the relationship between vitamin D deficiency and cardio-cerebrovascular diseases. 【Key Words】 Vitamin D; Cerebrovascular disease; Relationship