Mark S. Foster MD

​ You've heard about hormones your entire life, especially during those awkward years in school, but many people still don't understand exactly what they are and why they matter so much in regulating everything in your body, from your libido to your sleep. What Are Hormones? The most basic explanation is that hormones are your body's chemical messe...

There are few things our culture dreads more than the signs of aging, both physical and mental. Although as a culture we've shed many of the taboos that surround improving our appearance as we age, there are some physical conditions that we seem to have accepted as normal and unavoidable parts of getting older, without even considering an alternati...

​ As men age, it's normal to begin to worry if they will start to experience any problems with erections. In the case of erectile dysfunction, there are some signs that it could be developing before problems actually start in the bedroom. Here are a few signs it may be time to see Dr. Foster about potential erectile dysfunction problems: 1. You don...

Even though it may seem like erectile dysfunction is rare, up to 52 percent of men have experienced this problem. Just because your guy friends aren't talking about it doesn't mean it isn't happening to them. It's not just an older man's problem either. Some research has shown that one in four men under 40 have sought treatment for erectile dysfunc...