In the animal kingdom, penises can be spiked, split, corkscrewed—even detachable. They're one of the most diverse structures ...

Activists quietly shifting the goalposts on sex-and-gender discussion to escape the fact that they're losing the biology of ...

In the animal kingdom, penises can be spiked, split, corkscrewed - even detachable. They're one of the most diverse structures in biology. The human ...

Earlier this year, a group of researchers published a paper on the remarkable phenomenon of sex reversal in several ...

Modern researchers know about the cuckoo’s cross-species brood parasitism – but one Roman emperor observed this more than 700 ...

The testes, also known as testicles, are the primary male reproductive organs. They are responsible for producing sperm and ...

INTERSEX refers to a broad range of natural variations in a person’s sex characteristics—such as chromosomes, hormones, ...

Intricate and adaptable, scientists continually uncover mind-blowing details. You might think you know the basics, but female ...

An endometriosis patient is calling for more surgery options at home in Nova Scotia after travelling to the United States for ...

Evidence links the gut microbiota and fertility to women’s reproductive health, influencing hormone metabolism, and conditions such as PCOS.

About a year ago, a test revealed that I had an 8-mm stone in my kidney. My kidney doctor was not worried about it. I have ...

In this Healio video interview, Micaela F. Bayard, MD, discussed women’s health and reproductive health outcomes in rheumatic diseases, two topics that were featured at ACR Convergence 2025.