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Lung immune cells switch roles to drive allergic inflammation

Alveolar macrophages are immune cells that live in the tiny air sacs of the lungs. Under normal conditions, these cells act as guardians, keeping the lungs healthy, supporting breathing, and preventing unnecessary immune responses.

18 Dec 2025

New breakthrough expands possibilities for PET imaging

Imagine being able to watch organs and tissues work in real time. That's the power of Positron Emission Tomography, or PET imaging, a technology that gives physicians and researchers a window into cellular processes.

18 Dec 2025

Researchers point to mitochondria as a missing link between mental health and brain function

A stressful year leads to anxiety. Lasting isolation gives way to depression. An old trauma nags until it becomes paralyzing.

18 Dec 2025

Orthorexia nervosa links strongly to perfectionism and OCD traits, review shows

This umbrella review synthesised five meta-analyses to estimate the reported prevalence of orthorexia nervosa and examine its psychological correlates. Findings show wide variability in prevalence estimates and consistent links with eating disorder symptoms, obsessive-compulsive traits, and perfectionistic strivings, limited by high methodological heterogeneity.

18 Dec 2025

Study finds Brain Care Score as a strong predictor of stroke across racial groups

A new study from Mass General Brigham found the Brain Care Score (BCS) is a strong predictor of stroke across different racial groups in the U.S.

18 Dec 2025

AI-assisted evaluations can speed autism diagnosis

Access to autism evaluations through specialty health care is notorious for long wait times across the United States.

18 Dec 2025

Fertility preferences remain high in rural Tanzania despite family planning access

Fertility rates in much of Sub-Saharan Africa remain high, despite declining child mortality and improved access to contraceptives and female education - factors that generally lead to smaller families and improved economic conditions in developing countries.

18 Dec 2025

New nanoparticle vaccines show promise against multiple deadly filoviruses

Filoviruses get their name from the Latin word "filum," meaning thread-a reference to their long, filamentous shape. This virus family contains some of the most dangerous pathogens known to science, including Ebola, Sudan, Bundibugyo and Marburg viruses.

18 Dec 2025

Everyday light exposure shapes how alert and mentally sharp we feel outside the lab

This real-world study shows that recent and habitual light exposure are linked to lower subjective sleepiness and faster reaction times in daily life. Brighter and more stable daytime light patterns were associated with better performance on specific cognitive tasks, independent of sleep and time of day.

18 Dec 2025

Study finds a new protein target against KRAS-driven non-small cell lung cancer

Lung cancer is the second-most common cancer and the leading cause of cancer death in the United States.

18 Dec 2025

New early-warning platform aims to bring dengue forecasting into real-world use

Thousands of dengue forecasting models have been published, but few have been tested in real public-health settings.

18 Dec 2025

Large-scale study reveals joint functional and structural patterns of brain aging

Healthy aging induces parallel changes in brain functional activity and structural morphology, yet the interplay between these changes remains unclear.

18 Dec 2025

Advances in hemophilia gene therapy bring hope for pediatric patients

In the past three years, gene therapy has reshaped what's possible in hemophilia treatment for patients 18 and older. But a key question remains: How soon will these advances reach children?

18 Dec 2025

Junk' DNA may hold new clues to Alzheimer’s disease

When most of us think of DNA, we have a vague idea it's made up of genes that give us our physical features, our behavioral quirks, and keep our cells and organs running.

18 Dec 2025

Rapid HIV viral load testing shows mixed effects on seeking care

According to the U.S. Centers for Disease Control and Prevention (CDC) and other sources, there are approximately 1.2 million people living with HIV in the United States, and another 1.2 to 2.2 million who are at highest risk for infection and could benefit from the preventive measure known as HIV pre-exposure prophylaxis (PrEP).

18 Dec 2025

Experimental drug targets early toxic amyloid to slow Alzheimer’s disease

An experimental drug developed at Northwestern University has demonstrated further promise as an early intervention for Alzheimer's disease.

18 Dec 2025

Gestational diabetes alters the placenta at the molecular level, study reveals

Gestational diabetes can cause a multitude of complications in the offspring, but to date, the reasons are incompletely understood.

18 Dec 2025

ADHD linked to higher risk of criminal convictions within families

People with ADHD are at a higher risk of offending than those without an ADHD diagnosis. The same pattern appears among their relatives, according to a new study from örebro University.

18 Dec 2025

Scientists unravel how citrin deficiency can trigger fat buildup in the liver even in lean individuals

Scientists at City of Hope, one of the largest and most advanced cancer research and treatment organizations in the U.S. and a leading research center for diabetes and other life-threatening illnesses, have unraveled how citrin deficiency (CD), a rare genetic disorder that prevents the liver from converting food into energy efficiently, can trigger fat buildup in the liver - even in lean individuals.

18 Dec 2025

Folate deficiency drives genetic changes linked to lung cancer

Genetic alterations lie at the heart of cancer development, but scientists may have been overlooking a powerful driver of these changes—the everyday nutrients that feed our cells.

18 Dec 2025