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Food allergies are tricky to diagnose, and many kids can outgrow them, too. A test called an oral food challenge is the gold standard to rule out an allergy. It's performed under medical supervision.

For the first time, the American Academy of Pediatrics has weighed in on what teens and young adults (and their doctors and parents) need to know about safely getting piercings and tattoos.

Two days after Hurricane Maria thrashed the island, most of Puerto Rico's cellular sites are down — along with the entire power grid — making it difficult to check on people there.

Lonnie Bunch, executive director of the Smithsonian National Museum of African American Art and Culture, shares his thoughts on the past year as the museum celebrates one year on the National Mall.

The country allowed women to drive for the first time on Sunday. Previously, women in Saudi Arabia depended on chauffeurs and male relatives to travel anywhere via car, even to run simple errands.

Two herpes viruses that cause skin rashes in toddlers may accelerate Alzheimer's disease when they infect brain cells. The finding suggests antiviral drugs might help protect the brain.

Just in time for summer hikes and outdoor play, a study finds that the ticks that often convey Lyme disease become unable to bite, and soon die, after exposure to clothing treated with permethrin.

A relatively new variety of almond tree called Independence has some beekeepers nervous. These trees are self-fertile — meaning they technically don't need bees to pollinate their flowers.

The agency plans to reduce the incentive for doctors to use the most expensive drugs and link prices to patient outcomes, perhaps paying less when patients have to be admitted to a hospital.

Dalia Mogahed, director of research at the Institute for Social Policy and Understanding, gives an overview of American Muslims' political positions both historically and during this election cycle.