Excessive Niacin Linked to Increased Risk of Heart Disease

Excess niacin metabolism was found to be associated with major adverse cardiovascular events (MACE), with two breakdown products, 2PY and 4PY, showing a strong link to myocardial infarction, stroke, and other adverse cardiac events. The study suggests that niacin supplementation may require a more nuanced, titrated approach to avoid excess 4PY generation, which is associated with increased MACE risk. The findings highlight the potential impact of niacin levels on cardiovascular health and the need for careful consideration of niacin supplementation.