A headset recently approved by the Food and Drug Administration uses a weak electric current to shock the brain. Some researchers hope it could challenge the current pill-centric paradigm.

Prosecutors accused Dr. David Morens, a former adviser to Dr. Anthony S. Fauci, of hiding records related to the onset of the pandemic.

In a letter to states and other grant recipients, the Trump administration says the strips encourage drug use.

The case could help determine the future of thousands of lawsuits against the maker of a popular herbicide over claims that it causes cancer.

The desire to live longer and healthier lives has spawned a growth in services and supplements. So what works best?

Before the rise of GLP-1s, obesity experts didn’t study the internal buzz that compels people to eat. Now that food noise is being switched off, they want to understand it.

A new therapy has the potential to cure hundreds of diseases — and even reverse aging.

Fatimah Shepherd’s kidneys were compromised, and pregnancy could send her into kidney failure.

His work changed how doctors understood heart attacks, heart failure and coronary artery disease, and helped lead to therapies that saved millions of lives.

South Africans are spending more on weight-loss medicine while still making room for coffee, takeaways and small rewards.

A once-robust H.I.V. treatment and prevention system, credited with saving hundreds of thousands of lives, has begun to crumble.