"Erectile dysfunction is often caused by vascular disease," explained Dr. Ian Thompson, professor and chairman of the department of urology at the University of Texas Health Science Center at San Antonio. "A man could perceive decreased blood flow to the penis as being a less strong, a weaker erection, and that may actually be one of the first indicators of blood vessel disease." Very expensive Consultations Therapeutic options in managing erectile dysfunction Of the common causes of E.D., such as high blood pressure, alcohol abuse, and diabetes, prostate surgery figures prominently in the ad and is offered as the reason for Mr. Doles presence. Nowhere does it say that he personally experienced E.D. On the contrary, he was simply worried about E.D. as a postoperative side effect once he was diagnosed with prostate cancer. Heres the irony. For years, Bob Dole has been speaking out about the importance of a prostate cancer screening test for all middle-aged and older men. His well-intended efforts were misguided and may very well have generated more cases of E.D. The test appears to have inflicted more harm than good, causing many men to suffer the complications of treatment without reducing their odds of dying of prostate cancer.Prostatectomy, surgical removal of the prostate gland, is the most common treatment, and E.D. is a frequent result. buy Viagra 25mg here 50mg viagra online without prescription These drugs, called selective phodiesterase type 5 (PDE5) inhibitors, treat erectile dysfunction by interfering with the action of the compound PDE5 in the blood vessels of the penis. But there are concerns that PDE5 inhibitors may also act on similar compounds in the retina, the part of the eye that receives and transmits images to the brain, according to background information in the study.