VDR and myocardial infarction: Indeed, use of vitamin D additives in the normal population has been linked to lower MI incidence.14 On the other hand, vitamin D supplementation in patients with a history of MI did not improve endothelial function or other markers of vascular function.15 In addition to its role for the regulation of vascular tone, vitamin D may also directly influence cardiomyocyte function because mice with a cardiomyocyte‐specific deletion of the vitamin D receptor develop cardiac hypertrophy.16