Vitamin D3 halves risk of second heart attack with tailored dosing approach

Credit: Getty Images/TanyaJoy

By Claudia Tanner

A novel "treat-to-target" approach to vitamin D3 supplementation has demonstrated a 50% reduction in a second heart attack in patients who have already experienced one.

That’s according to findings from the TARGET-D trial presented at the American Heart Association Scientific Sessions 2025 in New Orleans.