Jon Hamilton

A resurgence in COVID-19 cases is testing the endurance of health care workers who care for the sickest patients, most of whom are unvaccinated.

Opioids can kill because they reduce breathing along with pain. Now brain scientists have made a discovery that could lead to potent pain drugs that don't affect breathing.

Scientists may have learned why opioids depress breathing while relieving pain. The finding could lead to pain drugs that don't cause respiratory failure, the usual cause of death in opioid overdoses.

The virus that causes COVID-19 can cause strokes, inflammation, oxygen deprivation and infection in the brain. And each of these may lead to long-term neurological problems.

Scientists are beginning to understand how COVID can cause brain injuries. The virus can lead to a stroke, starve the brain of oxygen, cause inflammation brain and might infect and kill brain cells.

A new Alzheimer's drug isn't reaching many patients. Doctors say reasons include its high cost, and lingering questions about its effectiveness.

A concussion can make it difficult to converse in a noisy room. Scientists say that's because the injury has impaired the brain's ability to process sounds.

People who sustain a concussion can develop an unusual hearing problem. Their ears work fine, but their brain struggles to process sounds.

Scientists have created detailed maps of the brain area that controls movement in mice, monkeys and people. The maps could help explain human ailments like Alzheimer's and Lou Gehrig's disease.

Two scientists who helped explain how we sense temperature and touch have received the Nobel prize in physiology or medicine. Their research could lead to new pain treatments.

Intensive rehabilitative therapy that starts two to three months after a stroke may be key to helping the injured brain rewire, a new study suggests. That's later than covered by many insurance plans.

The visual problem is usually treated in kids by temporarily covering the other eye with a patch. But that doesn't always work. Research now shows crucial brain rewiring can happen in adulthood, too.

The surf is always up in Waco, Texas, thanks to an artificial wave so good it's attracting top professionals and casual riders. It's a sign of just how far the technology of wave making has come.

The reason Waco has become a must-visit for surfers from around the world, is a surf park with state-of-the-art artificial waves. It can make 120 waves an hour and costs surfers about $10 a ride.

Alzheimer's researchers are trying new treatment approaches, including trying to boost the immune system, remove toxic tangles of protein and stimulate brain waves with light and sound.

Weeks after the Food and Drug Administration approved the Alzheimer's drug Aduhelm, doctors are struggling to figure out who should get the drug and how to use it safely.

At a scientific meeting in Denver, Colo., doctors who treat Alzheimer's patients are figuring out how they will use the newly approved drug Aduhelm, which has had conflicting evidence of its efficacy.

Some patients who have had COVID-19 develop symptoms resembling early Alzheimer's. Researchers are trying to figure out whether these people are more likely to develop the disease itself.

A stroke left a man paralyzed and speechless. Now a device that decodes brain signals is letting him generate words and sentences.

A plaque-busting Alzheimer's drug called Aduhelm has yet to prove it can preserve memory and thinking. Even so, its approval by the Food and Drug Administration is making some patients opitimistic.