Jon Hamilton

The new Alzheimer's drug Aduhelm isn't reaching many patients. And doctors say reasons include its high cost, insurers' reluctance to cover it, and lingering questions about whether it actually slows memory loss.

Headaches, nausea, dizziness, and confusion are among the most common symptoms of a concussion. But researchers say a blow to the head can also make it hard to understand speech in a noisy room.

People who have had a stroke appear to regain more hand and arm function if intensive rehabilitation starts two to three months after the injury to their brain.

A study of 72 stroke patients suggests this is a "critical period," when the brain has the greatest capacity to rewire, a team reports in this week's journal PNAS.

Nearly 200 miles from the nearest ocean, nine surfers are bobbing beneath the Texas sun in what looks like a tropical lagoon.

Then a sound like a muffled jet engine fills the air, overwhelming a reggae song coming from shore.

One surfer starts to paddle, and a head-high wave rises seemingly from nowhere to carry him down the line toward the sandy beach.

Nearly two months after the Alzheimer's drug Aduhelm received conditional approval from the Food and Drug Administration, experts are still debating how, and whether, it should be used.

Before she got COVID-19, Cassandra Hernandez, 38, was in great shape — both physically and mentally.

"I'm a nurse," she says. "I work with surgeons and my memory was sharp."

Then, in June 2020, COVID-19 struck Hernandez and several others in her unit at a large hospital in San Antonio.

"I went home after working a 12-hour shift and sat down to eat a pint of ice cream with my husband and I couldn't taste it," she says.

The loss of taste and smell can be an early sign that COVID-19 is affecting a brain area that helps us sense odors.

Soon after Phillip Lynn got married in 2014, he began to forget things. He'd repeat himself. He'd get lost in places close to the couple's home in a suburb of St. Louis.

Then in 2016, his spouse, Kurt Rehwinkel, realized that Lynn's memory problems had become more severe.

They'd just visited some friends who'd gone to Hawaii with them three months earlier. When they'd talked about the trip, Lynn had become confused.

People recovering from a stroke will soon have access to a device that can help restore a disabled hand.

The Food And Drug Administration has authorized a device called IpsiHand, which uses signals from the uninjured side of a patient's brain to help rewire circuits controlling the hand, wrist and arm.

A drug called aducanumab could become the first approved treatment designed to alter the course of Alzheimer's disease rather than relieve symptoms.

But it's unclear whether the Food and Drug Administration will approve the drug because of persistent questions about its effectiveness.

The FDA has a Monday deadline to make a decision on what would be the first new Alzheimer's drug in nearly two decades.

A robotic arm with a sense of touch has allowed a man who is paralyzed to quickly perform tasks like pouring water from one cup into another.

The robotic arm provides tactile feedback directly to the man's brain as he uses his thoughts to control the device, a team reports Thursday in the journal Science.

Previous versions of the arm required the participant, Nathan Copeland, to guide the arm using vision alone.

An experimental device that turns thoughts into text has allowed a man who was left paralyzed by an accident to construct sentences swiftly on a computer screen.

The man was able to type with 95% accuracy just by imagining he was handwriting letters on a sheet of paper, a team reported Wednesday in the journal Nature.

William Stoehr is a prominent artist whose sister died of an overdose. Dr. Nora Volkow is the director of the National Institute on Drug Abuse at the National Institutes of Health.

Together, the artist and the scientist are on a mission to let people know that drug addiction is a disease, not a moral failing.

"Prevention and treatment and recovery can't take place until we get rid of the stigma and people are willing to seek help," Stoehr says.

An experimental drug intended for Alzheimer's patients seems to improve both language and learning in adults with Fragile X syndrome.

The drug, called BPN14770, increased cognitive scores by about 10% in 30 adult males after 12 weeks, a team reports in the journal Nature Medicine.

At an animal sanctuary in the Congo, several dozen Congolese schoolchildren are getting a crash course in bonobos.

These gentle, endangered apes, who resemble chimpanzees, are "our closest cousins," educator Blaise Mbwaki tells the students in French. "They have a human character, and they are Congolese."

"So if you eat a bonobo," Mbwaki says, "you are eating your cousin. It is cannibalism."

When COVID-19 vaccines began arriving in Memphis, Tenn., late last year, some Black residents had questions. Did the vaccines cause infertility? Did they alter a person's DNA?

They don't. And local community leaders worked hard to counter these and other vaccine myths as they came up in public forums around town or appeared online.

Pages