Decades ago, doctors created a test to determine which breast cancer patients should receive hormone therapy. Now, ...

Hormone tests are often done as part of routine bloodwork, but your healthcare provider may order them if you're having menstrual issues, changes in sex characteristics, fatigue, loss of sex drive, or ...

Estradiol is the most potent form of estrogen. Now, researchers have developed a way to monitor estradiol levels by detecting it in sweat. Estradiol plays a major role in female health and fertility; ...