ScienceDaily: Top Health News


Repeated exposure to major disasters has long-term mental health impacts

Posted: 16 Jan 2022 05:19 AM PST

Repeated exposure to major disasters does not make people mentally stronger, a recent study found: individuals who have been repeatedly exposed to major disasters show a reduction in mental health scores.

Nuclei-free cells prove utility in delivering therapeutics to diseased tissues

Posted: 14 Jan 2022 10:11 AM PST

Researchers report successfully removing the nucleus from a type of ubiquitous cell, then using the genetically engineered cell as a unique cargo-carrier to deliver therapeutics precisely to diseased tissues.

Being in space destroys more red blood cells

Posted: 14 Jan 2022 08:57 AM PST

A world-first study has revealed how space travel can cause lower red blood cell counts, known as space anemia. Analysis of 14 astronauts showed their bodies destroyed 54 percent more red blood cells in space than they normally would on Earth, according to a new study.

Cellular receptors identified for eastern equine encephalitis

Posted: 14 Jan 2022 08:57 AM PST

A new study has identified a set of cellular receptors for at least three related alphaviruses shared across mosquitoes, humans, and animals that host the virus.

Scientists uncover 'resistance gene' in deadly E. coli

Posted: 14 Jan 2022 08:57 AM PST

Scientists have pinpointed a gene that helps deadly E. coli bacteria evade antibiotics, potentially leading to better treatments for millions of people worldwide.

Biologists pinpoint key factor in immune system response to viral infection

Posted: 14 Jan 2022 08:56 AM PST

Researchers studying how small worms defend themselves against pathogens have discovered a gene that acts as a first-line response against infection. They identified 'ZIP-1' as a centralized hub for immune response, a finding could have implications for understanding human immunity against viruses.

Creating a reference map to explore the electronic device mimicking brain activity

Posted: 14 Jan 2022 08:56 AM PST

Just like explorers need maps, scientists require guides to better understand and advance new technology. A neuromorphic device, which can mimic the neural cells in our brain, has lacked such a guideline and created headaches for scientists trying to understand their operational mechanisms. That is until now after a research group created a map that provides rational design guidelines for neuromorphic devices, paving the way for advancements in brain-inspired computers.

Do we get our most creative ideas when walking?

Posted: 14 Jan 2022 08:56 AM PST

Do we have our best ideas while walking? Indeed, but even small movements while sitting improve creativity, as two researchers have discovered.

The free-energy principle explains the brain

Posted: 14 Jan 2022 04:45 AM PST

The free-energy principle can explain how neural networks are optimized for efficiency, according to new research. This finding will be useful for analyzing impaired brain function in thought disorders as well as for generating optimized neural networks for artificial intelligences.

Novel treatment target for heart disease found in the blood vessel wall

Posted: 14 Jan 2022 04:45 AM PST

A molecule of RNA called CARMN has been found in abundance in the healthy smooth muscle cells that help give our blood vessels strength and flexibility, and distinctly decreased in vascular diseases like atherosclerosis, a major cause of heart attack and stroke, scientists report.

Risk of schizophrenia linked to brain cell development

Posted: 14 Jan 2022 04:44 AM PST

Scientists have discovered new links between the breakdown in brain cell development and the risk of schizophrenia and other psychiatric disorders.

Compost is a major source of pathogenic aspergillus spores, study suggests

Posted: 13 Jan 2022 04:49 PM PST

Compost and compost-enriched soils may contain high concentrations of A. fumigatus spores, a new study has found.

Like our social media feeds, our brains take a little while to update

Posted: 13 Jan 2022 04:41 PM PST

Our brains are constantly uploading rich visual stimuli. But instead of seeing the latest image in real time, we actually see earlier versions because our brain's refresh time is about 15 seconds. The findings add to a growing body of research about the mechanism behind the 'continuity field,' a function of perception in which our brain merges what we see to give us a sense of visual stability.

E-cigarette users who test positive for COVID-19 are more likely to experience COVID-19 symptoms

Posted: 13 Jan 2022 12:14 PM PST

People who use electronic cigarettes and test positive for COVID-19 have a higher frequency of experiencing COVID-19 symptoms, compared to people who don't vape, according to new research.