15 Dec 2025
All stories — Page 36
15 Dec 2025
Study: Many small galaxies may lack central black holes
A University of Michigan-led study using Chandra X-ray data finds many dwarf galaxies do not show signs of central supermassive black holes. The result suggests the biggest black holes may have formed large early and could be tested by future missions.
15 Dec 2025
Psychedelics change blood-flow signals in brain imaging
Researchers at Washington University found that psychedelics acting on serotonin can disrupt the normal link between neuronal activity and blood flow in mice. Similar effects appeared with psilocybin and in reanalyzed human fMRI data.
14 Dec 2025
14 Dec 2025
Targeting inflammation as a way to treat depression
A federally funded review and meta-analysis found that anti-inflammatory treatments reduced depressive symptoms and eased anhedonia in people with depression who had high inflammation. The drugs were not FDA-approved for depression and would be used off-label.
14 Dec 2025
Study finds similar narcissism patterns across countries
An international study of over 45,000 people in 53 countries found consistent narcissism patterns. Younger adults and men scored higher, people in wealthier countries scored higher, and group-oriented cultures did not differ much from individualistic ones.
14 Dec 2025
14 Dec 2025
14 Dec 2025
Untreated Sleep Apnea Speeds Heart Aging and Raises Death Risk
A laboratory study using a long-term mouse model finds that untreated obstructive sleep apnea — recreated by repeated drops in oxygen during sleep — leads to faster cardiovascular aging and higher mortality. Researchers call for early screening and treatment.
12 Dec 2025
Climate shocks, crop losses and health risks in Africa
Climate shocks in parts of Africa are hurting crops and helping pests and mosquitoes spread. Farmers face failed harvests and public health risks like malaria and cholera, while experts call for better infrastructure and funding.
12 Dec 2025
12 Dec 2025
Experts call for integrated One Health surveillance linking communities
Experts urge governments to build integrated surveillance systems that link community-level data across human, animal, plant and environmental sectors. A virtual roundtable highlighted research priorities and named integrated surveillance the most urgent need.