Why insurance requires an 8 a.m. testosterone test and what causes hand numbness and locking fingers.

My insurance company won’t let me receive my testosterone injection unless I have a low testosterone level at 8 a.m. Does this make any sense? -- T.B. ANSWER: Although I am never fond of insurance ...

Dear Dr. Roach: As I amble past middle age and try to take note of my functioning as a male, I wonder if I could benefit from taking one of these testosterone supplements that I see advertised on TV.

Testosterone levels can decline in men who don't get enough sleep. (Getty Images) Sometimes, the body doesn’t produce enough testosterone, a condition known as hypogonadism. You're considered to have ...

Millions of men live with a testosterone deficiency. If left unchecked, this treatable condition may contribute to serious health problems like osteoporosis and lowered red blood cell production. Dr.

Researchers are unlocking the mysteries of how low testosterone is related to men's overall health. Along the way, they're uncovering connections between low testosterone and other health conditions.

Low testosterone causes more than just problems with sex drive. It can also affect your mood, sleep, and energy levels, which can disrupt your quality of life and relationships. If you want to keep ...