Vince
Super Moderator
The arteries that supply the penis are only able to provide a strong sustained erection when they are working perfectly. So ED is often an indication that something is wrong with your arteries, and since the arteries of the penis are smaller than the arteries of the heart (coronary arteries), they tend to get clogged earlier. ED usually occurs before heart disease occurs. The penis is a likely barometer, a canary in the coal mine, for impending problems in the coronary arteries.
http://www.foxnews.com/health/2010/08/30/penis-barometer-heart.html
