Testosterone is being hailed as the secret to better energy, mood, and sex drive. Here’s what experts say about when it ...

Despite epidemiological studies suggesting a link between endogenous testosterone levels and increased risk of breast cancer in postmenopausal women, the use of hormone therapies containing androgens ...

Lower levels of sex hormones might be tied to tears of the shoulder's rotator cuff in men and women, a new study suggests. Among women with low levels of estrogen, researchers found the odds of a ...

Puberty is when the difference between men and women emerges. This is when our bodies massively increase the production of ...

Scientists have detected pregnancy hormones in ancient bones and teeth, revealing a new way to trace pregnancies in the ...