Randomized Trials Show Vitamin D Supplements Not Cancer, Heart Disease Reducer

From Bloomberg, "Vitamin D Shows No Benefit Against Cancer, Heart Disease" by Makiko Kitamura:

Vitamin D supplements don’t help prevent chronic diseases unrelated to the bones, according to a review of published research that challenges the prevailing wisdom held by proponents.***The randomized trials on vitamin D showed little to no effect in lowering risk for heart disease, diabetes, infectious diseases and mood disorders, among other conditions. In contrast, the observational studies generally reported moderate to strong effects on these disorders.

In cancer, observational studies showed the supplements had a protective effect on colorectal cancer, an outcome that wasn’t confirmed in two large randomized trials.