I searched the threads to see if perhaps this issue might have been raised or answered. The last few times I've had sex, I've noticed that I've had trouble staying erect much to mine and my present partner's disappointment (luckily these were one night stands). I've never had this issue before and I am only 31 years old, so I consider myself too young to be labeled as having ED. I did put on a good deal of weight over several years, which I am working on losing. I have a theory, far fetched as it might be, that an increased weight might have an effect on maintaining. Anyone ever heard of that being the case? Any help or insights would be appreciated.