"It's an important indicator," says Dr. Ira Sharlip, at the University of California. "Erections depend on blood flow, so if there is a problem with blood flow to the penis, what these studies say is that reduced blood flow due to arteriosclerosis may exist in other parts of the circulatory system and could lead to heart disease or heart attack. Men need to recognize that the circulatory system is responsible for many components of overall health, and that erectile dysfunction, which some men find difficult or embarrassing to discuss with their doctors, should be taken seriously because erectile dysfunction may be a warning sign of even more serious illness."
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