Total testosterone measures the full amount of the hormone in your blood, while free testosterone represents the small, ...

What Is Low Testosterone (Testosterone Deficiency)? Testosterone is the primary androgen — or male hormone — in your body. Low testosterone affects up to 39 percent of adult men in the US over the age ...

We include products we think are useful for our readers. If you buy through links on this page, we may earn a small commission. Here’s our process. An at-home testosterone test can help people monitor ...

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 ...

Whenever one experiences growth hormones, peptide hormones, thyroid hormones, stress hormones or sex hormones, the body's chemical messengers play a key role in many essential bodily functions and ...

Low testosterone is common, especially as men age. It's nothing to be ashamed of, and treatment options are available. Trouble getting things up? Reduced libido, erectile dysfunction, or difficulty ...

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 ...

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

Add Yahoo as a preferred source to see more of our stories on Google. Reeder explains that testosterone is far more involved than you would first think -- it plays are part in everything from muscle ...