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Medical Xpress / Dopamine neurons also work while you sleep to strengthen skills, study reveals

Dopamine neurons—the cells that drive reward and motivation while we're awake—become surprisingly active during nonrapid eye movement sleep right after we learn something new.

Dec 8, 2025 in Psychology & Psychiatry
Medical Xpress / Pancreatic cancer cells 'speak the language' of organs they will later invade, study reveals

Even as they develop at their primary site, pancreatic cancer cells are already expressing the genes that will determine where they will metastasize, according to new findings from Columbia researchers. The work, published ...

Dec 8, 2025 in Oncology & Cancer
Medical Xpress / Scientists reveal new genetic risk for severe macular degeneration

A new study published in Nature Communications reveals the specific genetic factors linked to the presence of reticular pseudodrusen—deposits that drive vision loss and are found on the retina of up to 60% of people with ...

Dec 8, 2025 in Genetics
Medical Xpress / Aging midbrain neurons face energy crisis linked to Parkinson's

Dopamine neurons in a part of the brain called the midbrain may, with aging, be increasingly susceptible to a vicious spiral of decline driven by fuel shortages, according to a study led by Weill Cornell Medicine investigators. ...

Dec 8, 2025 in Neuroscience
Medical Xpress / Childhood leukemia aggressiveness depends on timing of genetic mutation, research reveals

A team of researchers at the Icahn School of Medicine at Mount Sinai has uncovered why children with the same leukemia-causing gene mutation can have dramatically different outcomes: It depends on when in development the ...

Dec 8, 2025 in Oncology & Cancer
Medical Xpress / Hidden metabolic weakness in blood cancers revealed by new mapping tool

Scientists from Duke-NUS Medical School and their international collaborators have developed a new computational tool that maps how gene pathways interact in complex biological systems. Using this novel algorithm, the team ...

Dec 8, 2025 in Oncology & Cancer
Medical Xpress / Unified EEG imaging improves mapping for epilepsy surgery

A new advance from Carnegie Mellon University researchers could reshape how clinicians identify the brain regions responsible for drug-resistant epilepsy. Surgery can be a life-changing option for millions of epilepsy patients ...

Dec 8, 2025 in Neuroscience
Medical Xpress / Inside the gut: What our stool could tell us about our diet, gut microbes and health

Researchers from King's College London have found that molecules in stool samples can accurately reflect what people eat and how their gut microbiome responds, offering a potential new tool to study nutrition and its impact ...

Dec 8, 2025 in Gastroenterology
Medical Xpress / Social media use linked to gradual decline in children's attention span

Children who spend a significant amount of time on social media tend to experience a gradual decline in their ability to concentrate. This is according to a comprehensive study from Karolinska Institutet, published in Pediatrics ...

Medical Xpress / Those who care for family members with Alzheimer's experience poorer health and increased cellular aging

Brittany Butts understands that for many families, Alzheimer's comes as a double burden. As a teenager, she watched not only her grandmother's mental decline from the disease but also her aunt's struggles as the primary caregiver.

Dec 8, 2025 in Psychology & Psychiatry
Medical Xpress / PTSD may accelerate brain aging in 9/11 responders

Researchers from the Icahn School of Medicine at Mount Sinai have found that post-traumatic stress disorder (PTSD) may be linked to accelerated brain aging among World Trade Center (WTC) responders involved in rescue and ...

Dec 8, 2025 in Psychology & Psychiatry
Medical Xpress / Cardiology expert explains how faster and cost-effective testing can help save lives

In November, The Lancet published an international expert consensus review, "Contemporary, non-invasive imaging diagnosis of chronic coronary artery disease," that shows using CT coronary angiography (CTCA) when patients ...

Dec 8, 2025 in Health