This article was reviewed by Felix Gussone, MD. Hormones and Fertility in Men: What’s the Connection? Key Takeaways: From ...

WASHINGTON (Reuters) - Estrogen fuels feelings of power and competition in women in much the same way testosterone does in men, researchers said on Wednesday in a study that shows the need to win is ...

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 ...

Transdermal exogenous testosterone improves libido in postmenopausal women receiving estrogen therapy. Davis et al. have now demonstrated that 300 µg of testosterone a day, administered via skin ...

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 ...

AUGUSTA, Ga. - An enzyme that converts testosterone to estrogen appears to have significant impact in a healthy and injured brain, scientists report. There's mounting evidence that in the healthy ...

In male mice, testosterone is converted to estrogen by the action of the enzyme aromatase. The testosterone surge at the dawn of male life in the mouse becomes the basis for activation of estrogen ...

Some things are meant to be — like Superman and Wonder Woman falling in love. Ever wonder why that is? Turns out, there's science behind this magnetism between high-testosterone males and ...