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 ...

It checks the level of testosterone in your blood. Your doctor uses it to diagnose conditions caused by too much or too little testosterone. That’s a hormone produced in a man’s testes. Women make ...

Pop-up clinics and glossy adverts are selling men a new message: it is time to “check your T” (shorthand for testosterone levels). The idea is not about treating medical problems but about “optimising ...