Study: Too Much Exercise Could Be Bad For Your Heart

How much exercise do you get each day? A new analysis from Australia reveals there is such a thing as too much exercise. Sports cardiologists from Baker IDI Heart and Diabetes Institute in Melbourne reviewed a study published in the Canadian Journal of Cardiology that looked at whether exercise alone can change the heart and trigger arrhythmia, or heart rhythm issues. The analysis concluded that intense endurance exercise may be “cardiotoxic” and cause permanent structural changes in the heart. Study leader Dr. AndrĂ© La Gerche notes that all therapies, pharmacological or otherwise [such as exercise], have a dose-response relationship whereby benefits diminish at high doses and the risk of adverse events increases. Gerche adds, “The answers regarding the healthfulness of ‘extreme’ exercise are not complete and there are valid questions being raised. Given that this is a concern that affects such a large proportion of society, it is something that deserves investment.”