Missy Mazzoli's opera “The Galloping Cure” explores the opioids epidemic through a haunting allegory.

President Donald Trump has signed an executive order that calls for spacing out childhood vaccines into separate medical visits and splitting the combined measles, mumps and rubella vaccine into three different single-disease shots.

A coalition of farmers, consumer associations and environmental groups is urging Malaysia’s National Biosafety Board to reject a proposed field trial of genetically modified rice.

Most people have trouble sleeping for the first time in a new place.

A defense lawyer for the Massachusetts mother who killed her three young children is questioning her psychiatrist's expertise, prescribing decisions and overall treatment.

The World Health Organization says the fastest-growing Ebola outbreak started in February, months before it was officially declared in May.

A Georgia woman says she was wrongly diagnosed with aggressive cancer due to a labeling error and underwent an unneeded hysterectomy.

A 2-year-old girl whose parents sued a Texas hospital to prevent it from testing if she was brain-dead after she drowned on Memorial Day has been removed from life support and died.

Coffee has long been treated with caution in cardiology offices, largely because caffeine can temporarily raise heart rate and blood pressure.

Open-heart surgery has long been the standard treatment for severe aortic stenosis, a condition in which the heart’s aortic valve narrows and restricts blood flow. But cardiologists say a less-invasive procedure that was once reserved for the sickest patients is now available to a broader group — including some people considered low risk for traditional surgery.

President Donald Trump’s administration plans to overhaul Head Start, a key early education program for the nation's neediest children.

Sydney Towle, known for her social media content about living with a rare cancer, has died at 26.

Scientists are creating a new kind of vaccine that teaches the immune system to intercept a type of brewing colon cancer before it turns into a full-fledged tumor.

The world’s fastest-growing Ebola outbreak in Congo is still spreading faster than efforts to track it, according to the head of the World Health Organization.

The federal government is taking steps to shut down a Kentucky organ donation group accused of continuing plans for organ retrieval from some patients who unexpectedly showed signs of life.

Parasitic illness cases in 15 states have been linked to iceberg lettuce.

Dr. Erica Schwartz has been confirmed by the U.S. Senate as director of the Centers for Disease Control and Prevention.

Scientists at a biotech company have used gene editing to create two hypoallergenic beagles that don't trigger allergies.

Dr. Anthony Fauci’s decision to invoke the Fifth Amendment before Congress will be put to the test this week.

A provincial government in Nepal has legalized farming and use of marijuana for medical purposes.

Backpacks often become too heavy for kids, as students carry laptops, textbooks and more.

Ebola has killed over 1,700 people in eastern Congo, becoming the fastest-growing outbreak of the disease.

President Donald Trump's administration is planning to overhaul the Head Start program.

State health officials say two people have died in the cyclospora outbreak in Michigan.

Water plays a role in nearly every process in the human body. Our organs, cells and tissues all depend on it to work, which makes proper hydration an important part of staying healthy.

In parts of the U.S. where venomous snakes are more common, training programs aim to protect pets from getting bitten.

Swaths of sargassum are blanketing the Caribbean and Gulf of Mexico, suffocating shorelines and snuffing out marine life while spooking visitors in areas that depend heavily on tourism.

Millions of older adults on Medicare prescription drug coverage could face higher monthly costs in 2027.

A Supreme Court decision allowing the Trump administration to end temporary protected status for hundreds of thousands of Haitians is rippling far beyond immigration courts.

President Donald Trump's nominee to lead the Centers for Disease Control and Prevention has cleared a hurdle in the Senate.