A single gene that regulates testosterone levels in a 'crazy' species of shore bird controls the development of three wildly different types of males, a new study has found. Ruffs have long fascinated ...

Jess Thomson is a Newsweek Science Reporter based in London UK. Her focus is reporting on science, technology and healthcare. She has covered weird animal behavior, space news and the impacts of ...

The data showed that 87% of men who received Jatenzo achieved an average testosterone level within normal range The Food and Drug Administration (FDA) has approved Jatenzo (testosterone undecanoate; ...

When orangutans were shown two photos side by side, one of a dominant flanged male (having large pads on the sides of their ...

The Food and Drug Administration (FDA) has approved Jatenzo (testosterone undecanoate; Clarus Therapeutics) capsules for testosterone replacement therapy in adult males for conditions associated with ...