Healthy diets are rich in antioxidants like amino acids, omega-3 fatty acids and vitamin C, but exactly how beneficial these micronutrients are for cardiovascular health has long been controversial. Now a new meta-analysis provides some clarity. Researchers reviewed 884 studies available on micronutrients taken as dietary supplements. They identified several micronutrients that do reduce cardiovascular risk—as well as others that offer no benefit or even have a negative effect. "We developed a comprehensive, evidence-based integrative map to characterize and quantify micronutrient supplements' potential effects on cardiometabolic outcomes," said Simin Liu, MD. Antioxidant supplementation has long been thought to play a...