Vitamin D Supplementation Is A Double-Edged Sword

A new randomized trial shows it can reduce the risk of cancer, while increasing the risk of heart disease.

Courtesy of DALL-E

Imagine, if you will, the great Cathedral of Our Lady of Correlation is Not Causation. You walk through the majestic oak doors depicting the link between ice cream sales and shark attacks, past the rose window depicting the cardiovascular benefits of red wine, and down the…