343 Resultados de su búsqueda "Brain".
High levels of fluoride in drinking water may dim the intelligence of children, a new U.S. government report shows.
Based on an analysis of published research, the potentially controversial report marks the first time a federal agency has determined there is a link between drinking twice the reco...
A good night’s sleep is crucial for helping people make new memories, a new study says.
Neurons that capture new memories during the day reset while you sleep, researchers reported Aug. 15 in the journal Sci...
Casey Harrell was losing his ability to speak due to amyotrophic lateral sclerosis (ALS), also known as Lou Gehrig’s disease.
“Not being able to communicate is so frustrating and demoralizing. It is like you are trapped,†said Harrell, 45.
But a new brain-computer interface is allowing Harrell to speak to others once more, with his brain providing the words and a ...
Some comatose patients with severe brain injury might be paying closer attention to their surroundings than previously thought, a new study says.
About 1 in 4 patients respond to instructions covertly, with their brains showing activity even though their bodies aren’t moving, researchers found.
When asked to imagine opening and closing their hand, those comatose patients disp...
Untreated high blood pressure in your 60s could raise your risk for Alzheimer's disease later, new research shows.
The good news: Simple steps can ease hypertension, researchers said.
The global study found that "taking blood pressure medications was associated...
Eating a healthy diet that dampens inflammation in the body could lower your odds for dementia, especially if you already have heart risk factors, a new Swedish study shows.
So-called anti-inflammatory diets focus on foods like vegetables, fruits, whole grains, fish and beans and include heart-healthy regimens such as the Mediterranean diet.
In a study involving more than 84,000 old...
Drinking can increase a senior’s risk of a brain bleed following a fall, even if they only occasionally imbibe, a new study finds.
In fact, the risk of a brain bleed increases with a senior’s level of drinking, researchers found.
Occasional or weekly drinking doubled a pers...
Many people with Parkinson's disease may fear dementia as a common consequence of the disease.
But new research suggests dementia is not inevitable with Parkinson's, and in fact is less common than presumed.
If dementia does occur, it typically does so much later in life than was previously assumed, the study also found.
“These results provide more hopeful estimates of ...
Wildfire smoke could interfere with the safety of surgeries, a new study warns.
Inhaling the smoke could complicate the effects of anesthesia on surgical patients, and it also might hamper their recovery, researchers reported Aug. 6 in the journal Anesthesiology.
“Wildfire smoke poses significant health risks, particularly in people with preexisting heart and lung dis...
Folks who rub their forehead and complain that a complex problem is making their brain hurt aren’t overstating things, a new review suggests.
Mental exertion appears to be associated with unpleasant feelings in many situations, researchers reported Aug. 5 in the journal Psychological Bulletin.
<...Skip the bacon and those holiday hot dogs: A new study finds eating processed red meats raises your odds for dementia.
Overall, just two servings per week of processed red meat was linked to a 14% rise in dementia risk, compared to folks who ate less than three servings per month.
The finding made sense to Heathe...
Artificial intelligence is adding new luster to the old-fashioned EEG brain scan, increasing the potential usefulness of the century-old medical test, a new report says.
The EEG, or electroencephalogram, tracks brain activity through a dozen or more electrodes stuck to the scalp. It is often used to detect
Puttering around the home or office isn’t enough to protect a person from stroke, a new study says.
People need to be more active to lower their stroke risk, either by exercising in their free time or biking or walking to work, results show.
“Physical activity during leisure time and as transportation is becoming increasingly important now that many jobs and domestic ac...
Millions of Americans deal with the sleep deficits brought on by sleep apnea, and many turn to one of the few treatments out there, continuous positive airway pressure (CPAP) machines.
But what if new neurochemical targets in the brain could lead to new, less cumbersome therapies for sleep apnea?
That's what a team at the University of Missouri-Columbia are working on in their lab....
The risk of seizures within the next 24 hours can be predicted by watching for abnormal brain activity patterns in people with epilepsy, a new study finds.
The storm of brain activity that characterized a seizure is presaged by abnormal communication between specific areas of the brain, researchers discovered.
They say they can forecast seizure risk by analyzing just 90 seconds of t...
Autopsies of deceased boxers and pro football players have long confirmed that repeat head injuries can lead to a devastating brain condition known as chronic traumatic encephalopathy (CTE).
Now, research supports the notion that contact sports can also raise the odds for a Parkinson's-like disease, called parkinsonism, in athletes already affected by CTE.
In the new study, "subject...
Defiance, tantrums, aggression: All signs of a condition called conduct disorder, which Mental Health America says affects up to 16% of boys and 9% of girls.
Now, research is revealing real differences in the brain structure of children and...
Specific steps can be taken to reduce the risk of potentially fatal reactions to anti-seizure medications, researchers report in a new review.
Performing blood tests, asking patients about risk factors and modifying dosages all can reduce reaction risk for drugs that millions of Americans take for
Can you trust your gut?
UCLA researchers have shown that people who rank high in resilience -- meaning they accept change positively and follow their instincts -- have the bacteria living in their bellies in part to thank for it.
Their new study looked at the brains and gut microbiomes of people who cope effectively with different types of stress, including social isolation an...
A Colombian family's genetics are shining a spotlight on a gene that might help protect people from the ravages of Alzheimer's disease.
About 1,200 out of 6,000 family members carry a genetic variant called the "Paisa mutation,"which dooms them to early Alzheimer's, researchers said.
But 28 family members with the Paisa mutation dodged early Alzheimer's, apparently because they carr...
Older adults who avoid surgery because they fear general anesthesia will cause thinking declines need not worry, researchers report.
A study of more than 1,000 patients who had heart surgery at four hospitals in Canada found that the amount of anesthesia used did not affect the risk of delirium after surgery. Post-surgery delirium may contribute to cognitive decline.
How much anesth...
When there's pain, pressure and pounding in your head, you might think the worst: Is it a brain tumor?
Probably not, a Penn State physician assures.
Headache in and of itself is not a common sign of a tumor, because the brain itself doesn't feel pain, said Dr. John Messmer, medical director at Penn State H...
New research shows that a set of healthy lifestyle habits can help preserve brain function in folks with mild cognitive impairment or early dementia.
About 71% of patients who ate healthy, exercised regularly and engaged in stress management had their dementia symptoms either remain stable or improve without the use of any
Vigorous exercise more than once a week can lower the risk of dementia for people with high blood pressure, a new clinical trial shows.
People who engaged each week in vigorous physical activity had lower rates of mild cognitive impairment and dementia despite their h...
Severe forms of autism could be linked to overgrowth of the brain's outer layer that starts while a baby is in the womb, a new study finds.
Toddlers with autism have cerebral cortexes -- often referred to as "gray matter"-- that are roughly 40% larger than those of children without the developmental disorder, researchers reported recently in the journal
One of the biggest obstacles to treating brain cancer is getting tumor-killing drugs past the blood-brain barrier that normally protects the brain from foreign invaders.
Now, new research shows that ultrasound waves emitted from a device implanted in a cancer patient's skull could be the key to getting chemotherapy and immunotherapy drugs into the brain.
This ultrasound technology a...
Cerebral aneurysms: For most people, the word signals a sudden, fatal brain bleed that seemingly comes out of nowhere.
However, an expert at Penn State Health says that in many cases these brain blood vessel ruptures are spotted early, before they rupture. And even when they do occur, they are not uniformly fatal.
What is a cerebral aneurysm?
"An aneurysm is l...
California skateboarder Jared Hager has become the first person to receive a transparent skull replacement, which allows doctors to better view the function of his brain.
The window has allowed doctors to both monitor his progress and test new and better scanning methods for assessing brain health.
Hager, 39, of Downey, Calif., sustained a traumatic brain injury from a skateboarding...
Stuttering is a neurological condition, not a psychological one, and scientists in Finland now believe they've found the disrupted network in the brain that may cause it.
"These findings explain well-known features of stuttering, such as the motor difficulties in speech production and the significant variability in stuttering severity across emotional states," said senior study author
A bilingual brain implant has allowed a stroke survivor to communicate in both Spanish and English, scientists report.
Turning to an AI method known as a neural network, researchers trained the patient's implant to decode words based on the brain activity produced when he tried to articulate those words, and then display those words and sentences on a screen.
This method allows t...
One of the toughest decisions seniors face is when to give up their keys and stop driving.
Even slight changes to the ability to remember, think and reason can lead a senior to decide to stop driving, a new study finds.
Impaired cognitive function foreshadows the decision of many seniors ...
Specific nutrients could play a pivotal role in the healthy aging of your brain, a new study finds.
What's more, those nutrients correlate closely with those found in the Mediterranean diet, an eating pattern already associated with healthy brain aging, researchers report.
The identified nutrients "al...
The smell of food is appetizing when you're hungry. At the same time, it can be a turnoff if you're full.
That's due to the interaction between two different parts of the brain involving sense of smell and behavior motivation, a new study finds.
And it could be why some people can't easily stop eating wh...
Higher rates of blood vessel-damaging conditions like hypertension or diabetes may be driving up rates of cognitive decline and dementia among older American Indians, new research shows.
The study found that 54% of American Indians ages 72 to 95 had some form of impairment in their thinking and/or memory skills, while 10% had dementia.
The underlying causes: Vascular (blood vessel)...
People who carry two copies of the gene mutation most strongly implicated in Alzheimer's disease are almost certain to develop brain changes related to the degenerative disorder, a new study says.
A single mutated APOE4 gene has been found to pose the strongest genetics-driven risk factor for late-onset
Researchers say they've identified a human "neural compass"-- a pattern of brain activity that helps prevent humans from becoming lost.
For the first time, the internal compass humans use to orient themselves and navigate through the environment has been pinpointed in the human brain, researchers reported May 6 in the journal
A middle-aged Seattle man collapsed in his Portland, Ore.-area hotel room, where he was staying during a business trip.
He'd just tried fentanyl for the first time, and it very nearly killed him by literally destroying his brain.
Inhaling fentanyl caused terrible inflammation throughout la...
Researchers have conclusively identified the genetic cause of a rare, progressive movement disorder.
A rare extra-long version of a gene appears to cause nerve cells to become poisoned by toxic proteins in people with spinocerebellar ataxia 4 (SCA4), researchers report.
SCA4 causes muscle weakness and difficulty coordinating body movement, most notably resulting in a jerky and unste...
Advanced scanning techniques can find hidden inflammation in the brains of multiple sclerosis (MS) patients, a new study shows.
This "smoldering"inflammation detected by positron emission tomography (PET) brain scans could help explain why patients continue to decline even though imaging shows no brain changes, researchers reported recently in the journal
It's long been known that exposure to agricultural pesticides can greatly raise a person's odds for Parkinson's disease.
New genetics research now reveals those who might be most vulnerable.
A team at the University of California, Los Angeles (UCLA), pored over genetic data from 800 Par...
Soldiers can suffer brain injury if they are repeatedly exposed to explosive blasts, a new study shows.
Further, the more frequently a soldier is exposed to explosions, the greater their risk for brain injury, researchers reported April 22 in the Proceedings of the National Academy of Sciences.
Based on this, researchers intend to develop a diagnostic test to detect blast b...
An early marker of multiple sclerosis could help doctors figure out who will eventually fall prey to the degenerative nerve disease, a new study says.
In one in 10 cases of MS, the body begins producing a distinctive set of antibodies in the blood years before symptoms start appearing, researchers reported April 19 in the journal
Jobs that challenge your mind could help your brain age more gracefully, a new study suggests.
The harder your brain works on the job, the less likely you are to have memory and thinking problems later in life, researchers reported April 17 in the journal Neurology.
"We examined the demands of various jobs and found that cognitive stimulation at work during different stage...
Antipsychotics can substantially increase dementia patients' risk of many serious health problems, a new study warns.
Dementia patients prescribed antipsychotics have increased risk of stroke, blood clots, heart attack, heart failure, bone fractures, pneumonia and kidney damage, researchers re...
Want to feel happier?
Live in or near a place with a rich diversity of nature, a new study says.
Environments with plentiful natural features -- trees, birds, plants and rivers -- are associated with better mental well-being than the more spartan landscapes of suburbia, researchers found.
Further, spending time in areas like this can provide benefits that last up to eight hour...
Most folks think of blinking as the eyes' version of windshield wipers, clearing the eye of debris and maybe lubricating it, too.
But blinking is much more than that, researchers report: It also helps the brain process what it's seeing.
That's perhaps counterintuitive: Wouldn't it make sense to not blink, so eyes are receiving an uninterrupted stream of information?
Tapping the power of the small brain region called the cerebellum could improve patients' ability to move cutting-edge robotic limbs, a new study suggests.
The cerebellum is an ancient structure located under the brain, just above where the spinal cord connects to the brain.
This structure has largely been overlooked by prosthetics researchers in favor of the cerebral cortex, which ...
Lucid episodes are an unexpected occurrence among people with late-stage Alzheimer's disease and related dementias.
But these spontaneous events -- in which a person temporarily regains an ability to communicate that appeared to be permanently lost -- are not always a sign of impending death, a recent study argues.
Half the time, people live more than six months following their luci...
You know exercise is great for your cardiovascular health, but new research suggests that your brain has a lot to do with it.
It's all about physical activity's ability to lower stress levels within the brain, explained a team at Massachusetts General Hospital (MGH) in Boston.
Bolstering that finding, their study found that exercise brought the greatest heart benefits to peop...
The discovery of a gene variant that rids the brain of toxic plaques linked to Alzheimer's might lead to new treatments for the disease, researchers report.
The variant arises naturally in people who don't seem to get Alzheimer's disease despite having another gene, called APOEe4, that strongly prom...