Vitamin D regulates calcium homeostasis, but recently there has been growing interest in its role in the prevention of numerous chronic diseases, including cardiovascular disease (CVD). A lot of epidemiological studies suggesting that vitamin D deficiency is linked to increased CVD risk.
This review on Current atherosclerosis reports provides an update on this topic
Chin, Kathleen, Lawrence J. Appel, and Erin D. Michos. “Vitamin D, calcium, and cardiovascular disease: a “D” vantageous or “D” etrimental? An era of uncertainty.” Current atherosclerosis reports 19.1 (2017): 5.