Effects of vitamin D supplementation as an adjuvant therapy in coronary artery disease patients*

Objectives: Low vitamin D status has been shown to be associated with coronary artery disease. We planned to research the effects of vitamin D₃ supplementation on the severity of coronary artery disease. Design: We investigated the effect of 0.5 μg vitamin D₃ per day in a randomized, placebo-controlled, double-blind study in 90 stable coronary artery disease patients residing in Beijing. Coronary angiography was performed before and after 6 months of treatment that took place between January and June. 25-Hydroxyvitamin D was measured by chemiluminescence assay. Coronary artery disease severity was assessed by using the SYNTAX scores. Results: In vitamin D supplementation group, there was a significant increase in mean 25-hydroxyvitamin D levels from baseline (19.9?±?9.8 ng/ml) to 6 months (35.8?±?12.1 ng/ml; p?p?3 also had greater decreases in high sensitivity C-reactive protein and renin-angiotensin system activity (p?Conclusions: Vitamin D supplementation has beneficial effects on coronary artery disease; it can be an adjuvant therapy for patients with coronary artery disease.