Studying the shape of tissues and organs is critical to understanding how they are formed. Embryonic development happens in ...

Anthracene—a hydrocarbon known for its strong luminescence and high photo-reactivity—has long been considered one of the most iconic and widely studied organic molecules. Its [4+4] photocycloaddition ...

Testosterone is a naturally occurring steroid hormone. Despite its status as a steroid, prescription testosterone replacement therapy (TRT) isn’t the same as taking anabolic steroids. TRT is an ...

Dr. Sapolsky is a neuroscientist and primatologist. I was observing a 9-year-old male baboon in the Serengeti of East Africa one day in 1983. Baboon troops are very hierarchical, and this baboon was a ...

For more than 50 years, scientists have sought alternatives to silicon for building molecular electronics. The vision was elegant; the reality proved far more complex. Within a device, molecules ...

In the last year or so, health influencers — and a lot of women on social media — have talked up testosterone therapy as a kind of perimenopausal panacea. They promise boundless energy, crisper ...

Daniel Kelly does not work for, consult, own shares in or receive funding from any company or organization that would benefit from this article, and has disclosed no relevant affiliations beyond their ...

This is T-rrific news for some men. Testosterone replacement therapy (TRT) has been historically difficult to get because it requires proof of consistently low testosterone levels along with symptoms ...

Members of an FDA expert panel urged the agency to expand labeling for testosterone replacement therapy and remove its classification as a controlled substance. Like previous FDA expert panels, the ...

This is read by an automated voice. Please report any issues or inconsistencies here. Most women grow up hearing about estrogen and progesterone like they’re the only two hormones steering the ship.

Jasper Orlando, a young fitness TikToker, lets out a deep breath as he raises a glass of slimy raw eggs to his mouth. The yellow yolks bounce up and down as they glug, glug, glug out of the glass and ...