A contagious new COVID-19 variant called NB.1.8.1, aka "Nimbus," is now dominant in the United States, CDC data show. What to ...

In Ireland, head and neck cancer is the fifth most common cancer in males, HSE reports. More than one in two people will develop some form of cancer during their lifetime.

A team of scientists at the University of California, Riverside, explains in a paper published in PLOS Pathogens how a microscopic parasite, Toxoplasma gondii, can significantly disrupt brain ...

Accumulating evidence suggests that a common single-celled parasite called Toxoplasma gondii may also be a contributor: An April 2025 study showed for the first time that "human sperm lose their ...

The EU mandates labelling of 14 most common allergens. This article explores what these allergens are and foods to watch out for if you have an allergy.

Male fertility rates have been plummeting over the past half-century. An analysis from 1992 noted a steady decrease in sperm counts and quality since the 1940s.

Common parasite can decapitate human sperm − with implications for male fertility Some sperm cells had holes in their head, suggesting the parasites were trying to invade them as it would any ...

An April 2025 study showed for the first time that “human sperm lose their heads upon direct contact” with the parasite.

An April 2025 study showed for the first time that “human sperm lose their heads upon direct contact” with the parasite.