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What happens to your body during an ultramarathon? New study reveals key metabolic changes

This study tracked ultramarathon runners across 100 km, 160.9 km, and 230 km events to examine real-world metabolic, hormonal, and muscle stress responses. Severe energy deficits, muscle damage, and heterogeneous hormonal shifts were observed, with the greatest strain seen in the 230 km distance.

10 Dec 2025

Driving simulator exposes early Parkinson’s impairments that routine tests fail to detect

A high-fidelity driving simulator detected subtle visuospatial, attentional, and reaction time impairments in people with mild to moderate Parkinson’s disease, even when standard cognitive tests appeared normal. The study shows that simulator-based assessments can uncover real-world driving difficulties linked to disease severity that traditional screening tools often miss.

10 Dec 2025

People with epilepsy and learning disabilities face preventable early deaths

A combination of missed prevention opportunities and health inequalities can result in the early deaths of people living with epilepsy and intellectual disabilities, a study has shown.

10 Dec 2025

How much omega-3 do you need daily? New global review reveals DHA and EPA requirements

Global and national guidelines for long-chain omega-3 intake vary widely across life stages, with many countries lacking clear recommendations. Most authorities advise at least 250 mg/day of EPA and DHA, yet population intakes remain far below optimal levels.

10 Dec 2025

Glucose-lowering drugs may reduce risk of developing epilepsy

A preliminary study of people with diabetes suggests that use of glucose-lowering GLP-1 drugs may be linked to a lower risk of developing epilepsy. The study was published on December 10, 2025, in Neurology, the medical journal of the American Academy of Neurology.

10 Dec 2025

New AAN guideline offers treatment strategies for functional seizures

To help neurologists, mental health clinicians and other clinicians determine the best ways to help people manage functional seizures, the American Academy of Neurology has issued a new guideline, published on December 10, 2025, in Neurology, the medical journal of the American Academy of Neurology.

10 Dec 2025

Disrupted genome architecture drives lymphoma development

Cancer isn't just about broken genes-it's about broken architecture. Imagine a city where roads suddenly vanish, cutting off neighborhoods from essential services.

10 Dec 2025

Expanded donor matching makes stem cell transplants accessible

For years, the search for a stem cell donor has felt like a quest for a rare key-one that fits a lock with eight intricate tumblers, each representing a genetic marker.

10 Dec 2025

Mathematical modeling identifies strategies to eliminate cervical cancer

Cervical cancer is the fourth most common cancer for women in the world, with more than 660,000 new cases and nearly 350,000 deaths per year.

10 Dec 2025

Screen time and ADHD: why social media stands out from gaming and TV

Over four years in a large US cohort, greater social media use was associated with small but consistent increases in inattention symptoms in children, while video games and television were not. Genetic risk for ADHD did not modify this inattention association, and analyses supported a directional link from social media use to later attention difficulties.

10 Dec 2025

AI turns routine pathology slides into powerful maps of the tumor immune landscape

A large study shows that routine H&E pathology slides contain rich spatial proteomic signals that can be decoded by AI to model the tumor immune microenvironment at population scale. By generating virtual multiplex immunofluorescence images, GigaTIME enables pan-cancer discovery of immune patterns linked to invasion stage, survival, and genomic alterations.

10 Dec 2025

Antibody therapy clears residual multiple myeloma in early trial

Treatment with an immune and cancer cell-targeting antibody therapy eradicates residual traces of the blood cell cancer multiple myeloma, according to interim results from a clinical trial conducted by researchers at Sylvester Comprehensive Cancer Center, part of the University of Miami Miller School of Medicine.

10 Dec 2025

Deep learning uncovers why synthetic cannabinoids cause harmful effects

New psychoactive substances, originally developed as potential analgesics but abandoned due to adverse side effects, may still have pharmaceutical value if researchers could nail down the causes of those side effects.

10 Dec 2025

Dietary restriction boosts antitumour immunity by rewiring T cell metabolism

Dietary restriction reshapes CD8+ T cell metabolism by increasing ketone body–driven acetyl-CoA production, preventing terminal exhaustion and enhancing tumour control in mice. This metabolic reprogramming also boosts responsiveness to PD-1 blockade, suggesting a potential strategy to improve cancer immunotherapy.

10 Dec 2025

Discovery links human M cells to early steps of celiac disease

The human small intestine absorbs nutrients while protecting us from potentially harmful microbes. One of the cell types that plays a key role in this protection is the microfold cell, or M cell.

10 Dec 2025

Many arrested individuals in London may have undiagnosed ADHD or autism

Offering screening for neurodivergence to people detained by the police could help ensure access to appropriate support and fairer treatment in the criminal justice system, say Cambridge researchers, after a study suggests that one in two individuals arrested and detained in London may have undiagnosed attention-deficit/hyperactivity disorder (ADHD) and one in 20 may have undiagnosed autism.

10 Dec 2025

Collaborative project seeks safer therapies for ischemia and reperfusion injury

Southwest Research Institute (SwRI) and Trinity University will improve a prodrug, a compound activated in the body, to mitigate tissue and organ damage associated with heart attacks, strokes and traumatic injuries.

10 Dec 2025

Why the form of vitamin B12 you take may matter more than your intake

This comprehensive review examines vitamin B12 absorption, physiological roles, deficiency states, and dietary sources, with particular attention to differences between natural and synthetic forms. The authors conclude that while all B12 forms raise circulating levels, methylcobalamin may offer advantages in specific clinical contexts, especially where absorption or metabolic conversion is impaired.

10 Dec 2025

Optogenetic tool helps decipher mechanisms of brain dysfunction in Huntington’s disease

Synaptic plasticity — the brain's ability to modify the connections between neurons to support learning — is one of the neural functions profoundly altered in Huntington's disease, with a direct impact on brain function.

10 Dec 2025

Hidden infections may play a key role in driving long COVID symptoms

For millions suffering from long COVID, their persistent breathlessness, brain fog and fatigue remain a maddening mystery, but a group of leading microbiologists think they may have cracked the case.

10 Dec 2025