Health Expert David Knowles, M.D. shares health management news and commentary at HealthCentral.com. HealthCentral.com is one of the top health destinations on the Web, with more than 35 condition-specific, wellness and general health Web properties. http://www.healthcentral.com/profiles/c/54/index http://www.healthcentral.com/profiles/c/54/rss self application/xml en-us 15 120 19 http://www.healthcentral.com/images/hc_logo_sm.gif http://www.healthcentral.com/profiles/c/54/index http://www.healthcentral.com/erectile-dysfunction/c/54/2228/partner Sun, 27 Apr 2008 06:23:00 -0400 David Knowles, M.D. I would like to discuss the importance of partners and the relationships in Erectile Dysfunction (ED) and how they play an important role in the treatment of ED.Today many relationships suffer greatly due to the loss of physical relations due to ED. This can place a lot of strain on the other aspects of the couple’s lives and be the beginning of many problems they struggle with. It is important to discover the underlying problems in the... http://www.healthcentral.com/erectile-dysfunction/c/54/2228/partner http://www.healthcentral.com/erectile-dysfunction/c/54/2241/ed-due Mon, 11 Sep 2006 08:13:44 -0400 David Knowles, M.D. 52 year old male looking to either hear from or form, a support group for men that are struggling with the emotional cost of losing the ability to have an orgasm, as well as general ED, because of diabetes. I'm really struggling with this and I can't find anyone or anyplace that is offering help in this specific area. Are there any other brave men out there willing to share? I know I'm not the only one. Let's talk.I’m sorry,... http://www.healthcentral.com/erectile-dysfunction/c/54/2241/ed-due http://www.healthcentral.com/erectile-dysfunction/c/54/2240/read Mon, 11 Sep 2006 08:13:26 -0400 David Knowles, M.D. I've read several articles that mentioned Viagra causing Anorgasmia is some people. Do you know of anybody that had the same or similar problem with Cialis? I seem to have greater difficulty ejaculating when I've take Cialis than when I don't take it. So I've got a catch 22, either have a poor erection and can orgasm or have a good erection and problems ejaculating.I have not read any articles that have demonstrated that the... http://www.healthcentral.com/erectile-dysfunction/c/54/2240/read http://www.healthcentral.com/erectile-dysfunction/c/54/2114/3-ago Mon, 11 Sep 2006 08:11:05 -0400 David Knowles, M.D. 3 years ago, I had an unpainful erection which went down on its own after 6 hours; it was caused by an injection of a mixture of papaverine and phentolamine (even though I had no erectile difficulties). since that incident, the quality of my erections changed completely to become a lot smaller and softer even with 100 mg Viagra, as if my penis is not fully expanding, and while erect it is now curved about 15 degrees to the left, and the left... http://www.healthcentral.com/erectile-dysfunction/c/54/2114/3-ago http://www.healthcentral.com/erectile-dysfunction/c/54/2016/news Thu, 27 Jul 2006 05:00:12 -0400 David Knowles, M.D. There is some more great news for Erectile Dysfunction (ED) patients out of the American Urologic Association’s yearly meeting in Atlanta. There was some brief data presented on two new oral drugs being tested for the treatment of ED. The two medications are related to the other three which are approved for use in ED but have some advantageous new characteristics. These new drugs are called avanafil and SLX-2101. They are both only in... http://www.healthcentral.com/erectile-dysfunction/c/54/2016/news http://www.healthcentral.com/erectile-dysfunction/c/54/1912/expert Wed, 12 Jul 2006 05:04:01 -0400 David Knowles, M.D. Every month, Dr. Knowles answers your questions about erectile dysfunction. Email Dr. Knowles at feedback@erectiledysfunctionconnection.com with your question.This week I would like to answer some interesting questions that have been asked by our visitors on the website. I get asked many of these questions on a routine basis in my practice a so they should be informative and helpful to many of you. Please continue to contact me with your... http://www.healthcentral.com/erectile-dysfunction/c/54/1912/expert http://www.healthcentral.com/erectile-dysfunction/c/54/1834/basics Wed, 28 Jun 2006 05:07:40 -0400 David Knowles, M.D. This week, I would like to discuss the basic principles of normal erectile function. By understanding the basic mechanisms of achieving an erection, we will be able to better understand the different things that can go wrong and cause erectile dysfunction. We will discuss the problems that occur with this system in later blogs. Erections start in the brain. When a man is sexually excited, a message is sent from the front portion of the brain... http://www.healthcentral.com/erectile-dysfunction/c/54/1834/basics http://www.healthcentral.com/erectile-dysfunction/c/54/1802/ed Thu, 22 Jun 2006 08:16:19 -0400 David Knowles, M.D. Hi everyone. I would like to share with you some interesting things that have been announced recently for those of you impacted by ED.New ResearchInvestigators from Albert Einstein College of Medicine in New York led by Dr. Arnold Melman have recently presented early data that gene therapy for Erectile Dysfunction is safe and has some efficacy. They have completed the early research studies where people receive increasing doses of treatment... http://www.healthcentral.com/erectile-dysfunction/c/54/1802/ed http://www.healthcentral.com/erectile-dysfunction/c/54/1707/dr-ed Mon, 05 Jun 2006 11:46:29 -0400 David Knowles, M.D. Is ED a natural part of getting older? Although you are more likely to have ED if you are older, it should not be considered a natural part of getting older. According to the Massachusetts Male Aging Study, the overall probability of complete erectile dysfunction increases dramatically as men get older. Forty percent of men in their 40’s have some problems with erections while over 70 percent of men in their 70’s report having problems... http://www.healthcentral.com/erectile-dysfunction/c/54/1707/dr-ed http://www.healthcentral.com/erectile-dysfunction/c/54/1679/dr-ed Fri, 26 May 2006 08:27:39 -0400 David Knowles, M.D. I chose the field of medicine originally because I was very good in basic science. I was planning to go into basic medical science research. However, once I started to work with patients in medical school, I enjoyed it so much that I changed my focus toward clinical practice. I always loved to work with my hands, and found out that I had a skill in surgery. That drew me toward a surgical specialty. I would have never guessed that I would... http://www.healthcentral.com/erectile-dysfunction/c/54/1679/dr-ed