This article was reviewed by Felix Gussone, MD. If you’ve been feeling a bit more couch potato than go-getter lately, dragging through the day, snapping at people for no reason, or wondering where ...

Starting around age 40, many men notice the first physical changes that may be related to their hormone levels: Energy wanes ...

You might think it’s just stress that’s lowering your sex drive and making you feel tired or down, but it could in fact be low testosterone (also called male hypogonadism). Here are four common ...

Testosterone is the quintessential male hormone (androgen), and it’s a busy one, helping to regulate intimate function, muscle mass, red blood cell count, mood, and more. But not all testosterone in ...