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Phys.org / The making of doting dads may involve a specific gene

Male caregiving is rare. Of the nearly 6,000 mammalian species, fewer than 5% of fathers stick around to raise their own young. Most are even instinctively hostile. Even among the mammals that pitch in with caregiving duties, ...

2 hours ago in Biology
Medical Xpress / Evidence suggests chatbot disclaimers may backfire, strengthening emotional bonds

Concerns that chatbot use can cause mental and physical harm have prompted policies that require AI chatbots to deliver regular or constant reminders that they are not human. In an opinion appearing in Trends in Cognitive ...

2 hours ago in Psychology & Psychiatry
Medical Xpress / Cancer stress protein helps tumors hide from immune system

A protein made by stressed cancer cells helps lung and pancreatic tumors evade the immune system, a new study shows. Led by researchers from NYU Langone Health, the work found that new drugs designed to block the action of ...

2 hours ago in Oncology & Cancer
Phys.org / Solving a longstanding mystery about complex life's origin—oxygen-tolerant Asgard archaea may explain eukaryotes' rise

The most widely accepted scientific explanation for the arrival of all complex life on Earth has had an unsolved mystery at its heart. According to the theory, all plants, animals and fungi, known collectively as eukaryotes, ...

2 hours ago in Biology
Phys.org / Cultured beef differs from conventional beef in allergy-related hazards, food safety study shows

As cultured meat moves toward commercialization, people want to understand how it impacts health compared to conventional animal meat. So, researchers publishing in theJournal of Agricultural and Food Chemistry conducted ...

5 hours ago in Chemistry
Phys.org / Cosmic predators: How supermassive black holes slow star growth in nearby galaxies

Intense radiation emitted by active supermassive black holes—thought to reside at the center of most, if not all, galaxies—can slow star growth not just in their host galaxy, but also in galaxies millions of light-years ...

4 hours ago in Astronomy & Space
Medical Xpress / KRAS mutation type may guide more effective cancer treatments

KRAS is the most frequently mutated oncogene across all human cancers. Although different KRAS mutations have long been thought to exert the same cancer-driving effects, a new study led by UT Southwestern Medical Center researchers ...

1 hour ago in Oncology & Cancer
Medical Xpress / Debilitating tropical virus can spread in cool weather, posing a greater health risk than previously thought

Chikungunya virus, a debilitating tropical disease caused by infected mosquito bites, poses a greater health threat in Europe than previously thought because it can be spread when air temperatures are as low as 13°C. Researchers ...

Medical Xpress / Vaccine shows protection against severe childhood diarrhea

Each year, tens of thousands of children under 5 die from diarrheal disease caused by enterotoxigenic Escherichia coli (ETEC), primarily in low-income countries. A new ETEC vaccine has shown promising results in reducing ...

2 hours ago in Pediatrics
Medical Xpress / Macrophages need constant reminders to retain memories of prior infections, researchers discover

Researchers from the University of California, Los Angeles, have discovered that immune cells known as macrophages remain poised to fight repeat infections due to the persistent presence of signaling molecules left behind ...

3 hours ago in Immunology
Medical Xpress / Ancient mind-body practice proven to lower blood pressure in clinical trial

A traditional Chinese mind-body practice that combines slow, structured movement, deep breathing and meditative focus lowered blood pressure as effectively as brisk walking in a large randomized clinical trial published in ...

3 hours ago in Cardiology
Medical Xpress / Ultra-endurance running may accelerate aging and breakdown of red blood cells

Extreme endurance running damages red blood cells in ways that may affect their ability to function properly, according to a recent study. Although the duration and long-term implications of the damage are unclear, the study ...