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Scientists uncover hidden brain energy dynamics during REM sleep

Rss Feed - Mon, 07/27/2026 - 22:54
Our brain demands a lot of energy compared to our other organs. However, it can also make do when energy supplies are sparse, flexibly performing information processing using what is available.

Blood tests improve Alzheimer's detection in Down syndrome patients

Rss Feed - Mon, 07/27/2026 - 22:34
New blood tests that detect early changes associated with Alzheimer's disease are making diagnosis easier and accessible to more patients, since they are less invasive than the brain scans or spinal taps typically used for a definitive diagnosis.

Rare BTK mutation drives resistance to targeted therapies for blood cancer

Rss Feed - Mon, 07/27/2026 - 22:30
Scientists at Sylvester Comprehensive Cancer Center, part of the University of Miami Miller School of Medicine, and collaborators have uncovered a rare genetic mutation that enables some blood cancers to evade both approved Bruton tyrosine kinase (BTK) inhibitors and newer BTK degraders, a finding that could help shape the next generation of therapies for patients with chronic lymphocytic leukemia (CLL) and related malignancies.

A common dietary nutrient feeds a gut pathway linked to atrial fibrillation

Rss Feed - Mon, 07/27/2026 - 22:11
Researchers linked higher plasma TMAO to prevalent atrial fibrillation in 5,090 people and found that TMAO or choline supplementation accelerated AF onset, progression, atrial remodeling, and electrical dysfunction in mice. Inhibiting gut microbial TMA production lowered circulating TMAO and delayed AF in mice, identifying a potential therapeutic pathway that now requires human testing.

Three key brain regions interact during sleep to support memory formation

Rss Feed - Mon, 07/27/2026 - 16:18
Researchers at Kennedy Krieger Institute and Johns Hopkins Medicine have discovered that memory consolidation during sleep depends on coordinated activity among three brain regions and disruptions to this activity can impair memory performance.

St. Jude scientists uncover regulatory mechanism for crucial developmental pathway

Rss Feed - Mon, 07/27/2026 - 16:09
St. Jude Children's Research Hospital scientists uncovered a regulatory mechanism for signaling of Sonic Hedgehog (SHH), a pathway essential for embryonic development.

NIH grant funds study on stroke-related urinary incontinence

Rss Feed - Mon, 07/27/2026 - 16:00
Urinary incontinence is a common but frequently overlooked consequence of stroke. Now, researchers from the Mark and Mary Stevens Neuroimaging and Informatics Institute (Stevens INI) at the Keck School of Medicine of USC and Rancho Los Amigos National Rehabilitation Center have received a grant from the National Institutes of Health to investigate the brain changes responsible for these symptoms and develop a more personalized approach to treatment.

Industrial chicken farming drives evolution of foodborne bacteria strains

Rss Feed - Mon, 07/27/2026 - 15:43
A new study by the Ineos Oxford Institute for antimicrobial research, University of Oxford, reveals that industrial poultry farming has led to more than 100-fold increase in the movement of Campylobacter, allowing strains that once circulated in wild birds to mix extensively in commercial poultry populations.

Taste preference genes drive overeating and metabolic disease risk

Rss Feed - Mon, 07/27/2026 - 15:14
Ever wonder why some people crave sweets while others can take them or leave them? Preliminary findings from a new study suggest that people who carry certain genetic variants associated with a preference for sweet or fatty tastes not only tend to eat more of these foods but also have a higher risk of obesity and type 2 diabetes as a result.

Genetic factors influence cholesterol response to low-carb diets

Rss Feed - Mon, 07/27/2026 - 15:12
Can a low-carb diet cause your cholesterol to skyrocket? This question has vexed researchers and influencers alike as the popularity of low-carbohydrate diets has surged, yet the evidence has remained mixed.

Plant polymer lignin shows promise for future bone regeneration

Rss Feed - Mon, 07/27/2026 - 15:09
A new study reveals that lignin - a natural plant polymer - can be transformed into a bioactive material that promotes the formation of bone-like minerals while supporting the growth of bone-forming cells.

Dengue virus infects memory B cells to evade immune defenses

Rss Feed - Mon, 07/27/2026 - 14:19
Researchers at the University of Vermont Robert Larner, M.D. College of Medicine and Upstate Medical University in Syracuse, NY, have discovered that dengue virus can infect and replicate inside memory B cells, immune cells traditionally understood to help protect the body from infection.

Signals traveling from the gut through the vagus nerve help form memories

Rss Feed - Mon, 07/27/2026 - 14:13
When French writer Marcel Proust famously recalled his childhood from the taste of a Madeline cookie, his stomach may have done some of the work.

Trial successfully lowers alcohol use in humanitarian setting

Rss Feed - Mon, 07/27/2026 - 13:43
The first known randomized trial of an alcohol-reduction intervention in a humanitarian setting found a significant, sustained effect in lowering alcohol use.

Eye state alters brain signals for mind wandering

Rss Feed - Mon, 07/27/2026 - 13:29
A type of brain activity linked to arousal and attention can track mind wandering. But research is conflicting on whether this activity promotes or hinders mind wandering.

Noncombustible nicotine products replace cigarette use among young adults

Rss Feed - Mon, 07/27/2026 - 13:19
As cigarette smoking reaches historic lows in the U.S., new research from MUSC Hollings Cancer Center suggests a fundamental shift in tobacco use is driving that trend.

UC Davis researcher receives grant to study perceived cognitive aging

Rss Feed - Mon, 07/27/2026 - 13:01
University of California, Davis Professor of Neurology Sarah Tomaszewski Farias has been awarded a $3.3 million five-year grant from The National Institute on Aging to study if cultural differences affect how people perceive cognitive changes as they age.

Primary care practices successfully deliver family-based childhood obesity treatment

Rss Feed - Mon, 07/27/2026 - 12:55
Childhood obesity affects one in five children in the U.S., yet most families have limited access to specialized weight-management programs for children.

Alcohol use during pregnancy increased in the United States from 2011 through 2024

Rss Feed - Mon, 07/27/2026 - 12:46
Prenatal alcohol exposure-a contributor to adverse pregnancy outcomes and the leading preventable cause of neurodevelopmental disability worldwide-has increased in the United States over the past decade.

Slow-maturing microglia may enable powerful human cognitive abilities

Rss Feed - Mon, 07/27/2026 - 12:39
Microglia are the most common immune cells in the brain, where they defend against intruders and engulf damaged neurons.

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