Things proceeded just as nature intended, the researchers said. The term "erectile dysfunction" can mean the inability to achieve erection, an inconsistent ability to do so, or the ability to achieve only brief erections. These various definitions make estimating the incidence of erectile dysfunction difficult. According to the National Institutes of Health in 2002, an estimated 15 million to 30 million men in the United States experience chronic erectile dysfunction. What Treatments Are Available for Men With Diabetes and Erectile Dysfunction? generic viagra here viagra for sale usa About Erectile Dysfunction buy Viagra 200mg here viagra for sale online canada buy cialis 20mg here buy cialis generic online