Houston Chronicle, Nov. 22, 2006http://www.chron.com/disp/story.mpl/health/4355630.html Men thinking about asking their doctor for some pharmacological help in the bedroom may need to worry more about their hearts than their sex lives. As new research shows the cause of erectile dysfunction is usually the same poor blood flow that can lead to heart attacks, doctors increasingly are using patient requests for Viagra as an opportunity to check for cardiovascular disease. "Physicians need to be aware of these studies and alert men with erectile dysfunction that they may be at risk," says Dr. Ernest Schwarz, a cardiologist whose research at the University of Texas Medical Branch at Galveston led to the creation of a clinic for men with erectile dysfunction and heart disease.