By selectively blocking it, the drug pauses sperm production in a reversible way, without the hormone-related side effects seen in other male contraceptives. Right now, men have two main options when ...

Add Yahoo as a preferred source to see more of our stories on Google. All in good science. While sperm counts have significantly dropped in recent years and more men are having fertility issues these ...

The relationship between certain male hormones and fertility is strong: Even minor imbalances of these key hormones can have a major impact on reproductive health. For one example to illustrate how ...

Finally, researchers are closing in on an oral male contraceptive pill that works without hormones, offers full reversibility and – most strikingly – has caused zero side effects. The pill, called YCT ...

This article was reviewed by Felix Gussone, MD. Hormones are hugely influential in determining how you feel and function. These chemical messengers regulate metabolism, mood, reproduction, and energy.

For men, it is often taken as a given that muscle mass, vitality, and overall health will decline with age. By offering testosterone replacement therapy in the form of creams, gels, and injections, ...

Women’s reproductive rights in the U.S. are narrowing. Meanwhile, 46% of all pregnancies in the U.S. are unintended, pointing to the stark evidence of the enduring need for access to effective, ...