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Brain

CTE is believed to be caused by repeated head injuries.

At Least One in Four Former NFL Players Who Died Between 2016 and 2021 Had the Progressive Brain Disease CTE, Study Suggests

The true prevalence of the neurodegenerative disease—which is associated with repeated head injuries—among the deceased football players might be much higher. CTE affects other athletes too, including hockey players, soccer players and wrestlers

The researchers trained pet dogs to sit still during an MRI scan.

Scientists Gave Dogs MRIs and Learned That They’re Surprisingly Good at Distinguishing Between Human Emotions, Even Some Negative Ones

A recent study found that man’s best friend processes positive and negative human emotions differently and can distinguish between fearful faces and those showing sadness or anger

Scientists have discovered more than 4,400 ancient preserved human brains, some of which are 12,000 years old.

Archaeologists Have Found Thousands of Intact Ancient Human Brains. Scientists Say They’ve Figured Out Why the Organs Don’t Always Rot

Under the right conditions—wet and oxygen-deprived—the same chemical reactions that cause tissue to break down can instead have the opposite effect, according to a new study

Participating in a sleep study, or a polysomnography, can help doctors diagnose a patient with narcolepsy.

This Newly Approved Narcolepsy Drug Is the First to Target the Sleep Disorder’s Root Cause Rather Than Its Symptoms

The Food and Drug Administration just greenlit a medication called Orzeyful for the treatment of narcolepsy type 1 in adults. The condition is caused by the loss of brain cells that produce orexin, a chemical important for regulating the sleep-wake cycle

Past studies have suggested that what’s good for the heart may also help protect the brain. But researchers hoped to frame that connection in a different way—not just as reduced risk, but as time gained without dementia.

Avoiding These Three Vascular Health Risk Factors in Midlife Can Help You Delay Dementia for About 13 Years, Study Suggests

High blood pressure, diabetes and smoking are three major modifiable risk factors of dementia. New research tracked more than 12,000 participants to quantify how many years of healthy cognitive function you can gain by evading some or all of them during middle age

The belly is one of the most ticklish body parts across analyzed cultures.

From Armpits to Feet, Our Ticklish Hot Spots Are Surprisingly Universal. The Finding Offers Clues About the Sensation’s Evolutionary Origins

A new study probes the basics of gargalesis, a poorly understood type of tickling caused by firm, repetitive touches that typically elicits laughter and squirming

The mushroom Psilocybe pelliculosa is one of several species that produce psilocybin, a natural compound with hallucinogenic properties.

Could Psilocybin Help Treat Anorexia? A Small Clinical Trial Suggests the Psychedelic May Make Patients More Open to Recovery

The drug, paired with intensive psychological support, may loosen the rigid patterns of thought associated with the eating disorder, scientists say—but they caution that it is not a magic cure

Traffic can be bad for your health in many ways. Now, researchers have found that it might also increase the risk of Parkinson's disease.

Long-Term Exposure to Road Traffic Noise Might Increase Your Risk of Developing Parkinson’s Disease, New Research Suggests

A study that examined 3.1 million adults in Denmark across 18 years found a modest but consistent correlation. The findings hint that disruptive environmental sounds are a credible risk factor for the brain disorder

The new work contributes to a broader shift in bilingualism research, which is moving toward the view that grammar is supported by a shared, flexible brain mechanism that operates across all languages.

How Does a Bilingual Speaker’s Brain Process Two Languages? New Research Suggests That Both Rely on the Same Neural Wiring

Scientists have long wondered whether different neural mechanisms govern each language within a bilingual speaker’s brain. A recent study of people who speak both English and Spanish hints at a single “grammatical engine”

The drug targets the tau protein, which accumulates and forms tangles (seen in blue) in nerve cells.

Experimental Alzheimer’s Drug That Fights a Tough-to-Target Protein Shows Promise at Slowing Cognitive Decline in a Clinical Trial

Recently FDA-approved treatments work to clear clumps of the protein amyloid beta in the brain. A drug that instead goes after tangles of the protein tau can yield similar cognitive outcomes, a new study suggests

Handedness refers to both hand preference and hand dominance. 

People Aren’t Born as Righties or Lefties—They Develop Hand Dominance With Practice, a New Study Suggests

Humans do have a biological preference for using one side of their body, which might prime them for using limbs on that side for complex motor tasks like writing—and honing those skills over time

A pregnant naked mole-rat queen, on the left, and a worker, on the right, sniff each other.

Naked Mole-Rat Queens Emit a Special Scent to Stop Their Rivals From Reproducing, a New Study Suggests

The strange-looking creatures are one of two known mammals that use a social structure like that of bees and ants. A ruling rodent maintains power over her colony via one key chemical compound, according to new research

Keith Thomas is now able to grasp, lift and drink from a cup on his own. 

A Man With Paralysis Has Regained Feeling and Movement in His Hands After an Experimental Brain Implant

After months of training, the patient can now move his arms and hands and feel the sensation of touch

The researchers tracked eye and body movements of larval zebrafish.

Fish and Humans Share Surprisingly Similar Sleep Habits, Including Daytime Naps

A recent study suggests that zebrafish have four sleep substates, just like humans do—and one of them is akin to an afternoon snooze

Some tasks involved grabbing food in tricky situations.

Is Your Dog Right-Pawed or Left-Pawed? Here’s How to Figure It Out, According to a New Study

Researchers devised a series of tests to measure your furry friend’s laterality, which can be associated with behavior, emotion and cognition

How teenage participants moved on a schoolground in Spain. 

Researchers Accidentally Discover That Humans Prefer to Turn Counterclockwise. But They Still Have No Idea Why

The effect transcends factors like culture, gender and handedness, causing the scientists, who were initially studying social distancing behavior, to scratch their heads

A swan swims on the Scharmützelsee at sunrise on July 2, 2025, when temperatures in the nearby German cities of Berlin and Brandenberg were expected to hit 102 degrees Fahrenheit.

‘Stupid Hot’: Heat Waves Muddle the Minds of Animals and Humans as Confusion and Aggression Seem to Rise With the Temperature

Wide-ranging research suggests that as temperatures increase, some creatures pick fights while others struggle to learn. The findings hint at consequences that may ripple through ecosystems

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America at 250: The Revolutionary Spark

This Playful Interactive Reveals the Medical Advances That Have Made Life Better … and Sometimes Longer

From replacing lost limbs to helping a heart find its rhythm, the work of American doctors and researchers has improved lives in incalculable ways

Happy in her enclosure in 2022

Happy, an Asian Elephant Who Demonstrated That Her Species Might Be Self-Aware, Dies at 55 at the Bronx Zoo

In research reported about 20 years ago, Happy appeared to recognize herself in a mirror. She was later the subject of a failed lawsuit claiming that elephants should have certain fundamental human rights

Around 90 percent of people are right-handed.

Why Is Nearly Every Person Right-Handed—but Not Every Ape and Monkey? New Research Explores the Evolutionary Origins of Human Handedness

Brain size and bipedalism are the most likely drivers of our species’ right-hand dominance, according to new research

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