People who are immunocompromised continue to worry about COVID. A raft of products promise protection. Is there any evidence they can protect from infection or lessen severity of disease?

A study finds that for countries worldwide, the "democratic experience" — through free and fair elections — plays a larger role than GDP in easing the burden of chronic diseases.

Researchers identified a strain of bacteria that flourishes in the guts of athletes after exercise. When transferred to mice, it gave a big boost in endurance. Could runners' probiotics be on the way?

Some scientists say we've entered a new geological epoch — the anthropocene era — defined by the human impact on the global landscape. Three artists traveled to 22 countries to see what we've wrought.

The FDA has strengthened oversight of experimental fecal transplants after a patient died of an infection. The donor's stool contained disease-causing pathogens, but was not tested before use.

A new book investigates the history of unsafe and deceptive practices by some generic drug manufacturers, and explains why U.S. regulators struggle to keep up with a global industry.

The U.S. is in the midst of a record-breaking measles epidemic. What brought us here, who is most at risk and what do you need to know now?

Vaccination eliminated measles from the U.S. nearly 20 years ago. But with this year's record-setting outbreak, are we close to measles making a sustained comeback?

It's the only repellent that drives mosquitoes away when they come in contact with it. A new study has a theory about why that is.

While it may seem that heaps of plastic from meal kit delivery services make them less environmentally friendly than traditional grocery shopping, a new study suggests that's not necessarily true.

An exhibit at the Smithsonian's National Museum of African Art highlights the remarkable skills and creativity of iron workers from over 100 ethnic groups across the continent.

It's good to feel empathy, right? Not always, according to a forthcoming book. Humans are empathetic beings, and we sometimes harm others, not out of a failure of empathy, but because of it.

Beira, a coastal city in Mozambique, had a system in place to protect against flooding. Still, it was destroyed by the cyclone. Mayor Daviz Simango reflects on what went wrong.

Memory faltering as you age? Parts of your brain that used to work in sync may be out of step. A study shows that a precise jolt of electricity can bring these parts back together, boosting memory.

Researchers came up with a test to see if people are flexible thinkers. And they gave it to Westerners and to Himba people in Namibia. The results might surprise you.

A study ties an estimated 4,300 premature deaths a year to the air pollution caused by corn production in the U.S. In some regions, the per-bushel health costs exceed the corn's market price.

Deep brain stimulation offers relief from some neurological problems and is being tested for mood disorders. But the treatment — an implant in the brain — raises ethical questions.

To track the spread of bacteria that resist antibiotics, researchers are trying wastewater testing to get a fast, accurate picture.

Pregnant women in prison face difficult circumstances, and data on their pregnancies has been scarce. New research lays the groundwork for addressing this neglected public health issue.

Studies on the genetics of human diseases have focused largely on people of European descent. Researchers say this lack of diversity is bad science and exacerbates health inequities.