The spread of a puzzling respiratory virus in the Middle East and beyond doesn't yet constitute a global health emergency despite a recent spike in cases, the World Health Organization said...

Raising a worldwide alarm, the World Health Organization announced Monday that spread of polio is an international public health emergency that could grow in the next few months and unravel the nearly...

Mark Matulaitis holds out his arms so the Parkinson's specialist can check his tremors. But this is no doctor's office: Matulaitis sits in his rural U.S. home as a neurologist a few hundred...

Research shows a common antidepressant may cut production of one of the chief suspects behind Alzheimer's, a new avenue in the hunt for drugs to prevent the devastating brain...

Autistic adults are much more likely than others to suffer from depression, high blood pressure, obesity and additional health woes that may partly result from their social isolation, new U.S....

A botched lethal injection in Oklahoma this week has renewed a debate on whether doctors should be banned from executions — or required to participate to make the process more...

Researcher Leonid Moroz emerges from a dive off the Florida Keys and gleefully displays a plastic bag holding a creature that shimmers like an opal in the seawater.   This translucent animal...

More than three decades after the eradication of smallpox, U.S. officials say it is still not time to destroy the last known stockpiles of the virus behind one of history's deadliest...

Scientists implanted thin sheets of scaffolding-like material from pigs into a few young men with disabling leg injuries — and say the experimental treatment coaxed the men's own stem cells...

Bacteria resistant to antibiotics have now spread to every part of the world and might lead to a future where minor infections could kill, according to a report published Wednesday by the World Health...