A popular zero-calorie sweetener could injure cells in the brain's blood vessels, a lab study finds. Here's what we know so ...

In a major new finding almost a decade in the making, researchers at Harvard Medical School say they’ve found a key that may ...

From this basic fact, we can extrapolate a few things, most especially that all the cells that make up your body today came ...

Some cancer cells don't die; they go quiet, like seeds lying dormant in the soil. These "sleeper cells," scattered throughout the body, can stay inactive for years. But when the body faces a ...

Each human is a finely tuned orchestra of more than 37 trillion cells. Mapping this little-known world is one of biology’s greatest challenges — and one in which scientists say they just made ...

For the first time researchers from both Sheba Medical Center and Tel Aviv University have grown human kidney organoids (a ...

Mitochondrial mutations don't seem to build up in women's eggs as they age, which suggests they may have evolved a mechanism ...

Health and Human Services Secretary Robert F. Kennedy Jr. said this week that he's pulling the plug on nearly $500 million in ...

The future of mRNA cancer immunotherapies is uncertain after Health and Human Services Secretary Robert F. Kennedy Jr. defunded 22 mRNA vaccine projects for flu and COVID-19.

Cutting calories doesn’t just slim you down—it also reduces cysteine, an amino acid that flips fat cells from storage mode to ...

Entamoeba histolytica infects nearly 50 million people each year and kills around 70,000. It’s a shape-shifting parasite that invades the human gut, often causing mild symptoms like diarrhea.

Entamoeba histolytica is a single-cell parasite that causes intestinal disease, but sometimes invades the body, attacking cells and creating liquefying abscesses. UC Davis parasitologist Katherine ...