Exercising in Polluted Air Still Protects the Heart

We all know how important exercise is when it comes to heart health. I've been touting this for years ,before the American Heart Association (AHA) elevated physical inactivity as important a risk factor as smoking, high blood pressure and elevated cholesterol. We also are well aware of the perils of the air we breathe.

Well, this may come a surprise : a recent Danish study comprised of over 50.,000
subjects showed that exercise decreases the risk of first and recurrent heart attacks regardless of air quality.

Great news. Again the power of exercise reigns. But I would caution exercising in heavily polluted areas. Air pollution in itself is a cardiac risk factor.

Besides ,how can you compare the air quality of Copenhagen with that of Los Angles or New Your City ?!