When Thorsten Siess was in graduate school, he came up with the idea for a heart device that's now been used in hundreds of thousands of patients around the world.

Clinical trials of MDMA have been promising, but concerns have emerged about the quality of the research. A June hearing scheduled by the Food and Drug Administration is likely to address them.

Surgeons transplanted a kidney and thymus gland from a gene-edited pig into a 54-year-old woman in an attempt to extend her life. It's the latest experimental use of animal organs in humans.

As a shortage of growth hormone used to treat rare diseases in children drags on, families and doctors are struggling with insurers' requirements to get prescriptions filled.

More than 25 million adults in the U.S. have tinnitus, a condition that causes ringing or buzzing in the ears. An FDA approved device that stimulates the tongue, helped 84% of people who tried it.

Artificial wombs could someday save babies born very prematurely. Even though the experimental technology is still in animal tests, there are mounting questions about its eventual use with humans.

Scientific advances in immunotherapy and new targeted therapies have increased survival rates. But screening among former and current smokers still needs to improve to save more lives.

This change follows the recent FDA approval of the weight-loss drug for preventing heart attack and stroke in people with overweight or obesity.

Surgeons at Massachusetts General Hospital said they transplanted a genetically edited pig kidney into a living human for the first time. The 62-year-old recipient has end-stage kidney disease.

The National Institutes of Health is sunsetting its influential COVID-19 treatment guidelines, used by millions of doctors to guide care during the pandemic.

Scientists are optimistic that gene-edited animals could provide a new source of organs for transplantation. Pig organs modified to minimize rejection are now being tested in humans.

After seven years of research, the findings shed light on the long-neglected illness. Scientists say the results could lead to future trials for potential treatments.

A doctor argues that the current focus on fighting obesity with drugs like Ozempic ignores the bigger picture: We need a medical system and society that support healthy life habits.

Scientists report that gene therapy restored at least some hearing and speech for five out of six children with a rare form of genetic deafness.

Long COVID patients can experience severe energy crashes after physical exertion. New research provides clear evidence that there's a biological basis for the symptoms.