However, 
                      what works even better than Viagra for many men with erectile 
                      dysfunction, McKinlay says, is increasing one's physical 
                      activity, kicking the smoking habit, and watching one's 
                      weight and cholesterol. As erectile dysfunction is related 
                      to cardiovascular disease, such changes can also reduce 
                      the risk of the biggest killer of men in the world. 
                    If that 
                      doesn't do it, then McKinlay suggests men work with their 
                      doctors to change medications before trying medication specifically 
                      for erectile dysfunction. As a last resort, a number of 
                      invasive treatments are available. 
                    Meanwhile, 
                      older women experience reduced vaginal lubrication and reduced 
                      blood flow to sex organs, and the intensity of muscle spasms 
                      during an orgasm are diminished. These and other issues 
                      can be addressed through estrogen replacement therapy and 
                      something as simple as using lubricants. 
                    Although 
                      some recommend and swear by such alternative therapies as 
                      ginkgo biloba or an amino acid called L-arginine for libido 
                      and erection problems, McKinlay says there's no scientific 
                      data that shows hormone supplements, herbs or dietary supplements 
                      work to address erectile dysfunction. However, that's not 
                      to say alternative medicine won't work, he adds. 
                    Strategies 
                      for Keeping the Spark Alive