Cardiologists warn — popular supplement may harm the heart
Cardiologists warn that the popular supplement coenzyme Q10 (CoQ10) lacks convincing scientific evidence of heart benefits and may in some cases interact with medications such as warfarin and affect blood sugar levels. Experts note that professional guidelines do not consider CoQ10 as a replacement for standard treatment, and its effectiveness for muscle pain from statins is not confirmed by clinical studies. Instead of supplements, doctors recommend a Mediterranean diet, physical activity, and adequate sleep.
Cardiologists warn that the popular supplement coenzyme Q10 (CoQ10) lacks convincing scientific evidence of heart benefits and may in some cases be problematic due to drug interactions. Four cardiologists surveyed by Parade believe that for most people there is no compelling reason to regularly take CoQ10 specifically for heart protection. Dr. Ryan Cappel compares CoQ10 to a "spark plug" in cells but notes the difference between a biological mechanism and proof of reducing heart attack risk. Dr. Patrick Kee reminds that professional guidelines do not consider CoQ10 as a replacement for standard treatment, and the American Heart Association rates its benefit for heart failure as uncertain. Particular concern is raised by CoQ10's interaction with warfarin and possible effects on blood sugar levels. Dr. Rigved Tadwalkar notes the "opportunity cost" — people spend money on an unproven supplement instead of effective measures. Doctors recommend a Mediterranean diet, 150 minutes of aerobic activity per week, and adequate sleep. CoQ10 is found in fatty fish, nuts, soy, tofu, and cauliflower.