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Category: health – Page 9

The brain has higher concentrations of plastic particles compared to other organs, with increased levels found in dementia patients.

In a comprehensive commentary published in Brain Medicine, researchers highlight alarming new evidence of microplastic accumulation in human brain tissue, offering critical insights into potential health implications and prevention strategies. This commentary examines findings from a groundbreaking Nature Medicine article by Nihart et al. (2025) on the bioaccumulation of microplastics in the brains of deceased individuals.

The research reveals that human brains contain approximately a spoonful of microplastics and nanoplastics (MNPs), with levels three to five times higher in individuals with documented dementia diagnoses. Even more concerning, brain tissue exhibited MNP concentrations seven to thirty times higher than those found in other organs, such as the liver or kidneys.

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A story about traveling through time, literally.

When we fly, we often cross time zones, sometimes even when we drive. Imagine for a moment that this is a continuous process. Even as you walk, your zone moves just a little from one moment to another.

S assume that your personal noon is when the sun is highest. You can create the time for your own body with this calculator. ” + Give it a try. If you have an iPhone, open the included compass app to get the longitude and latitude required to set this personal clock. You can also use Google Earth with your browser to find your location and the lat and long in the bottom right.

Personal solar time and sun elevation timeline.

http://folkstone.ca/Heliox/3DForceModels/Personal-Time-2.html.

Once upon a time there was enough technology that everybody had their own personal time zone to maximize their health and enjoyment. Yes, it seemed odd for a while that time was now considered time and location, but it did not take long to get used to everybody living in a different time zone. Sounds confusing when we are used to large time zones, but you know, so was coordinated time at one point. Just a little different way of doing things that keeps us healthier and happier.

Continue reading “Navigating the Daylight Saving Time Debate” | >

Scientists Develop Hydrogel That Heals Wounds in Just 24 Hours! Researchers at UCLA have created a groundbreaking human skin-like hydrogel that repairs wounds 90% in just 12 hours and fully heals them within 24 hours! ✔This futuristic material mimics real skin, speeding up tissue regeneration like never before. While still in testing, this could revolutionize wound care, making slow healing a thing of the past. #wounds #superskin #skin #Health #healthylifestyle

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Deterioration of the hippocampus precedes and leads to memory impairment in late adulthood (1, 2). Strategies to fight hippocampal loss and protect against the development of memory impairment has become an important topic in recent years from both scientific and public health perspectives. Physical activity, such as aerobic exercise, has emerged as a promising low-cost treatment to improve neurocognitive function that is accessible to most adults and is not plagued by intolerable side effects often found with pharmaceutical treatments (3). Exercise enhances learning and improves retention, which is accompanied by increased cell proliferation and survival in the hippocampus of rodents (4– 6); effects that are mediated, in part, by increased production and secretion of BDNF and its receptor tyrosine kinase trkB (7, 8).

Aerobic exercise training increases gray and white matter volume in the prefrontal cortex (9) of older adults and increases the functioning of key nodes in the executive control network (10, 11). Greater amounts of physical activity are associated with sparing of prefrontal and temporal brain regions over a 9-y period, which reduces the risk for cognitive impairment (12). Further, hippocampal and medial temporal lobe volumes are larger in higher-fit older adults (13, 14), and larger hippocampal volumes mediate improvements in spatial memory (13). Exercise training increases cerebral blood volume (15) and perfusion of the hippocampus (16), but the extent to which exercise can modify the size of the hippocampus in late adulthood remains unknown.

To evaluate whether exercise training increases the size of the hippocampus and improves spatial memory, we designed a single-blind, randomized controlled trial in which adults were randomly assigned to receive either moderate-intensity aerobic exercise 3D/wk or stretching and toning exercises that served as a control. We predicted that 1 y of moderate-intensity exercise would increase the size of the hippocampus and that change in hippocampal volume would be associated with increased serum BDNF and improved memory function.

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New study reveals surprisingly high electron densities in the Lunar environment, hinting at the potential role of lunar crustal magnetic fields in shaping plasma dynamics.

In a major finding, scientists from Space Physics Laboratory, VSSC, analysing radio signals from India’s Chandrayaan-2 (CH-2) orbiter – which is in good health and providing data — have revealed that the Moon’s ionosphere exhibits unexpectedly high electron densities when it enters the Earth’s geomagnetic tail. This finding sheds new light on how plasma behaves in the lunar environment and suggests a stronger influence of the Moon’s remnant magnetic fields than previously thought.

The scientists have used an innovative method to study the plasma distribution around moon. In this method they conducted experiments using the S-band Telemetry and Telecommand (TTC) radio signals in a two-way radio occultation experiment, tracking CH-2’s radio transmissions through the Moon’s plasma layer. These signals were received at the Indian Deep Space Network (IDSN), Byallalu, Bangalore. The results revealed a surprisingly high electron density of approximately 23,000 electrons per cubic centimetre in the lunar environment, comparable to densities observed in the Moon’s wake region (previously discovered by the same team) and nearly 100 times higher than those on the sunlit side of the Moon.

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Starship 38 disintegrates just before reaching space and Intuitive Machines Athena lunar lander lands on its side. Watch to learn more.

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An international team of scientists developed augmented reality glasses with technology to receive images beamed from a projector, to resolve some of the existing limitations of such glasses, such as their weight and bulk. The team’s research is being presented at the IEEE VR conference in Saint-Malo, France, in March 2025.

Augmented reality (AR) technology, which overlays and virtual objects on an image of the real world viewed through a device’s viewfinder or , has gained traction in recent years with popular gaming apps like Pokémon Go, and real-world applications in areas including education, manufacturing, retail and health care. But the adoption of wearable AR devices has lagged over time due to their heft associated with batteries and electronic components.

AR glasses, in particular, have the potential to transform a user’s physical environment by integrating virtual elements. Despite many advances in hardware technology over the years, AR glasses remain heavy and awkward and still lack adequate computational power, battery life and brightness for optimal user experience.

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You can talk to an AI chatbot about pretty much anything, from help with daily tasks to the problems you may need to solve. Its answers reflect the human data that taught it how to act like a person; but how human-like are the latest chatbots, really?

As people turn to AI chatbots for more of their internet needs, and the bots get incorporated into more applications from shopping to health care, a team of researchers sought to understand how AI bots replicate human , which is the ability to understand and share another person’s feelings.

A study posted to the arXiv preprint server and led by UC Santa Cruz Professor of Computational Media Magy Seif El-Nasr and Stanford University Researcher and UCSC Visiting Scholar Mahnaz Roshanaei, explores how GPT-4o, the latest model from OpenAI, evaluates and performs empathy. In investigating the main differences between humans and AI, they find that major gaps exist.

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Scientists headed by a team at the University of Utah Health have reported on research in mice suggesting that microbiome composition during infancy can shape development of pancreatic insulin-producing cells, leading to long-term changes in metabolism and impacting on diabetes risk later in life. The study, reported in Science by research co-lead June Round, PhD, professor of pathology at University of Utah Health, and colleagues, identified what the team describes as “a critical neonatal window in mice when microbiota disruption results in lifelong metabolic consequences stemming from reduced β cell development.”

Round suggests that understanding how the microbiome impacts metabolism could potentially lead to microbe-based treatments to prevent type 1 diabetes. “What I hope will eventually happen is that we’re going to identify these important microbes, and we’ll be able to give them to infants so that we can perhaps prevent this disease from happening altogether.”

In their published paper, titled “Neonatal fungi promote lifelong metabolic health through macrophage-dependent β cell development,” the team concluded that their results “… identify fungi as critical early-life commensals that promote long-term metabolic health …”

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Cow D lived on a dairy farm in New Zealand. The animal looked like the typical black-and-white cow farmers raise for milk, except for one thing: Researchers had outfitted Cow D with an artificial fistula—a hole offering them a way to reach the microbes inhabiting the animal’s bathtub-size stomach. But it’s what happened next that offers a porthole into the global debate over the use of genetic data.

In the spring of 2009, Samantha Noel, then a doctoral researcher at Massey University in Palmerston North, New Zealand, reached into Cow D’s rumen and plucked out a strain of Lachnospiraceae bacterium, later dubbed ND2006. Another team of geneticists sequenced the microbe’s complete set of genes, or genome, and uploaded the information, which was then shared with GenBank, a public database run by the US National Institutes of Health. If genes are the book of life, then this process was like adding a digital copy to an online library. In policy circles, these lines of code go by another name: digital sequence information, or DSI.

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