A new study forecasts more than 850,000 measles cases over the next 25 years if US vaccination rates stay the same. Millions of infections are possible if rates drop.

Pharmaceutical giant Eli Lilly alleges the companies are selling illegal off-brand versions of its best-selling diabetes and weight-loss drugs, Mounjaro and Zepbound.

Amid an ongoing measles outbreak, the US is also facing a surge in pertussis, or whooping cough. As vaccine rates drop, other diseases could be next.

A novel drug that produces a temporary coating in the small intestine could be a new strategy for weight loss—and an alternative to surgeries and GLP-1 drugs.

Startup Colossal Biosciences has edited the DNA of a gray wolf to produce what it says is a de-extincted animal. Does that make it a true dire wolf?

Startup Gameto has developed a technique for maturing eggs outside the body that’s showing promise at helping patients get pregnant with fewer hormone treatments.

Leading scientists at the National Institutes of Health, the US’s leading medical research agency, were swept up Tuesday in the Trump administration’s latest firing blitz.

In an advance for treating male infertility, researchers transplanted a patient with his own sperm-forming stem cells that were collected from testicular tissue when he was a child.

DNA-testing company 23andMe has filed for bankruptcy, which means the future of the company’s vast trove of customer data is unknown. Here’s what that means for your genetic data.