In this population-level cohort study of 20 low-mortality countries, females ages 35 to 60 experienced disadvantage in cancer mortality compared with males—a consistent pattern observed across birth ...

The tiny Amazon molly (Poecilia formosa) has always fascinated researchers because, according to the rules of evolution, it shouldn't have survived as a species, let alone thrive as a species for over ...

A new study on mayflies of the genus Ecdyonurus illustrates just how multifaceted and surprising reproductive behavior in ...

Learn about how to find the right medical professional for perimenopause — be it a gynecologist, NP, or primary care ...

Evolutionary theory has revolutionized the way we understand humans – yet more than a century after Darwin's ideas reshaped biology, the female form of our species remains largely a mystery.

Researchers found a rare, strictly binary brain feature in mice that is permanently active in females but completely dormant ...

Amazon mollies don't need a man, and never will. A new study finds they can purge and repair genetic mutations that would ...

Men have nipples, mammary glands and the hormones required, but the ability for male lactation rarely turns on. Here’s why ...

Thirty babies in a lifetime might sound unbelievable, but in the animal world, that number can be modest. Reproduction follows a clear biological pattern.

The experiment began with a straightforward prediction: microbes from older mice would age young ovaries. But when the ...

In the deep ocean, where sunlight never reaches, and food drifts down like confetti, survival is less about speed and more ...

Health warning to female employees told fatigue and anxiety are ‘part of being a woman’ - Systemic medical dismissals are ...