Vitamin D improves Heart Function,finds new Study

A daily dose of vitamin d supplements may improve heart function in people with chronic heart failure. Vitamin d3 can be boosted by exposure to sunlight, but heart patients are often deficient in it even during the summer because older people make less vitamin d3 in response to sunlight than younger people.

In the survey (university of Leeds), 80 patients who took vitamin d3 the heart's pumping function improved from 26% to 34%.