All posts tagged: Medical Good News

New holographic 3D printer could revolutionize tissue engineering

New holographic 3D printer could revolutionize tissue engineering

Published by Jenni Sidey

Volumetric 3D printing can create full objects in seconds, but wasted light has held it back. An EPFL team now redirects laser energy far more efficiently, producing larger, cleaner, cell-filled structures with gentler power, and pushing bioprinting closer to medical reality. A team of researchers at the École Polytechnique Fédérale de Lausanne, known as EPFL, has developed a major upgrade to a futuristic form of 3D printing that creates entire objects almost instantly using light. Their new method dramatically improves efficiency and precision, bringing scientists closer to printing large, tissue-like structures that could someday help repair the human body. The breakthrough centers on a technology called tomographic volumetric additive manufacturing, or TVAM. Unlike traditional 3D printers that build objects layer by layer, TVAM creates complete three-dimensional structures inside a rotating vial of liquid resin. Laser light hardens selected regions of the liquid until a finished object suddenly appears. In earlier versions of the technology, much of the laser’s energy was wasted. The EPFL team found a way to preserve far more of that power by …

Blood cells originated from single-celled ancestors 700 million years ago

Blood cells originated from single-celled ancestors 700 million years ago

Published by Jenni Sidey

Blood cells carry a deep evolutionary history. A new analysis suggests their earliest ancestors were macrophage-like cells inherited from single-celled life. By tracing those lineages back 700 million years, the work opens a new window into immunity’s ancient roots. Blood does more than move oxygen and fight infection. It also carries a record of where animals came from. A new evolutionary analysis suggests that the roots of blood cells stretch back roughly 700 million years. That period was when the first multicellular animals were beginning to emerge. In that picture, some cells now circulating through vertebrate bodies may trace their origins to genetic programs inherited from single-celled ancestors. The work, led by researchers at Kyoto University, set out to answer a basic but stubborn question. Scientists know a great deal about what human and mouse blood cells do. However, they know much less about when those cells first appeared and how they split into the many lineages seen today. To tackle that, the team developed a new method for comparing gene expression profiles across cell …

Stretchable AI skin patch analyzes heart data on the body in milliseconds

Stretchable AI skin patch analyzes heart data on the body in milliseconds

Published by Jenni Sidey

A skin-like computing patch could give wearable health devices something they have long lacked, instant judgment. By running AI directly on the body in milliseconds, the stretchable system sidesteps server delays and points toward faster responses when every heartbeat matters. A stretchable computing patch that clings to skin like a bandage may push wearable medicine into much faster territory. Instead of simply collecting data and sending it elsewhere for analysis, the device can process information right where it touches the body, and do it in milliseconds. That difference matters most when time is thin. In dangerous heart rhythm emergencies, even a short delay can make the gap between useful action and missed opportunity. The patch was developed by researchers at the University of Chicago Pritzker School of Molecular Engineering, working with scientists at Argonne National Laboratory. In tests, the system used built-in artificial intelligence to analyze several kinds of health data while bent and stretched, without depending on a wireless trip to an outside computer. “The future that we’re trying to realize is to make …

New AI model reads the language of genes to detect diseases faster

New AI model reads the language of genes to detect diseases faster

Published by Jenni Sidey

Artificial intelligence is helping scientists read gene behavior more like language, revealing how genes cluster, shift roles, and shape disease. A new model from Mount Sinai learns from vast datasets to predict missing links, spotlight obscure genes, and hint at faster biomedical discoveries. Artificial intelligence has transformed how computers understand human language. Now, scientists at the Icahn School of Medicine at Mount Sinai are using a similar idea to decode one of biology’s biggest mysteries: how genes work together inside human cells. In a new study, researchers introduced a gene set foundation model, or GSFM, designed to learn relationships between genes across millions of biological datasets. The system draws inspiration from large language models such as ChatGPT, which learn how words gain meaning from context. Instead of studying sentences, however, this new AI studies groups of genes. The result is a system that can predict how genes interact, identify poorly understood genes and even suggest possible disease targets. Researchers believe the model could eventually improve drug discovery, diagnostics and the understanding of human disease. “Genes …

Scientists discover why deadly lung scarring from IPF refuses to heal

Scientists discover why deadly lung scarring from IPF refuses to heal

Published by Jenni Sidey

Idiopathic pulmonary fibrosis slowly turns the lungs stiff and scarred, but researchers may have found why the damage keeps building. Their work points to a survival signal inside key cells, and to a treatment approach that could help the lungs recover. Every breath depends on millions of tiny air sacs inside the lungs working smoothly. In people with idiopathic pulmonary fibrosis, or IPF, that delicate system slowly breaks down. Healthy lung tissue becomes stiff and scarred. Oxygen struggles to move into the bloodstream. Even simple activities can leave patients exhausted and gasping for air. Doctors have long known that scar-forming cells called fibroblasts play a major role in the disease. These cells normally help repair injured tissue. Once healing is complete, many fibroblasts die through a natural process called apoptosis, which acts like the body’s cleanup system. In pulmonary fibrosis, that process fails. A new study from researchers at National Jewish Health and collaborating institutions may finally explain why. The research, published in Nature Communications, found that a protein called BCL-2 helps harmful fibroblasts avoid …

Malaria may have shaped human evolution for thousands of years

Malaria may have shaped human evolution for thousands of years

Published by Jenni Sidey

Malaria may have shaped early human life across Africa far earlier than once thought, steering where people could safely live and when groups stayed apart. By tracing ancient mosquito habitats, researchers found an overlooked disease barrier running through humanity’s deep past. For decades, scientists believed climate was the main force guiding where early humans lived across Africa. Shifting rain patterns opened green corridors. Expanding deserts cut populations apart. Wet and dry cycles pushed groups into new landscapes or trapped them in isolated regions. But a new study suggests another powerful force may have quietly shaped human history for tens of thousands of years: malaria. Researchers from the Max Planck Institute of Geoanthropology, the University of Cambridge and several collaborating institutions found evidence that malaria likely influenced where ancient human groups could safely live between 74,000 and 5,000 years ago. Their findings suggest the disease helped separate populations across Africa long before agriculture emerged. The study paints a striking picture of early human life. Ancient people were not only adapting to changing climates and dangerous predators. …

New research challenges the belief that yo-yo dieting ruins your metabolism

New research challenges the belief that yo-yo dieting ruins your metabolism

Published by Jenni Sidey

Losing weight and regaining it has long been blamed for harming metabolism and heart health. But a sweeping new review finds little evidence that weight cycling itself causes lasting damage in people with obesity, raising a more important question about what really drives risk. Losing weight, gaining it back, then trying again can feel exhausting. For many people, the emotional toll is just as heavy as the physical struggle. Over the years, repeated weight loss and regain, often called “yo-yo dieting” or weight cycling, earned a damaging reputation. Some experts warned it could permanently slow metabolism, increase fat gain and raise the risk of heart disease and diabetes. A new scientific review now challenges that belief. After examining decades of research in humans and animals, scientists concluded there is no convincing evidence that weight cycling itself causes lasting harm in people with obesity. Their message was direct and reassuring. Trying to lose weight, even if the weight later returns, appears far less harmful than many people once feared. Weight regain after weight loss (CREDIT: 1The …

Obesity damages your face as well as nerves across the whole body, AI finds

Obesity damages your face as well as nerves across the whole body, AI finds

Published by Jenni Sidey

Obesity does not just enlarge fat stores, it appears to rework the body’s wiring and immune landscape in ways scientists have struggled to see. Now, whole-body mouse maps point to damaged facial sensory nerves, and to inflammatory hotspots with wider implications. Obesity is easy to spot on a scale. What has been much harder to see is how deeply it reshapes the body beneath the surface. This ranges from immune-cell buildups in swollen tissue to subtle damage in nerves that help animals sense the world around them. That blind spot may now be narrowing. A research team led by Prof. Ali Ertürk of Helmholtz Munich and Ludwig Maximilians University Munich (LMU) has developed a whole-body imaging and analysis system called MouseMapper. This deep-learning framework can scan intact transparent mice and automatically map nerves, immune cells, organs, and tissues across the body. In obese mice, the approach turned up widespread inflammatory changes. In addition, it revealed an unexpected form of nerve remodeling in the face. The work pushes past a long-standing problem in obesity research. Scientists …

Healthy diets may slow chronic disease and aging in older adults

Healthy diets may slow chronic disease and aging in older adults

Published by Jenni Sidey

Healthy eating in older age may do more than support general wellness. A long Swedish study found that diets tied to brain and heart health slowed the buildup of chronic disease, while inflammatory eating patterns appeared to push that burden higher. Growing older often brings new health challenges. Heart disease, dementia, depression and diabetes become more common with age. For many older adults, these conditions do not appear alone. They build over time, creating a complex web of chronic illness that affects daily life, independence and well-being. Now, a major long-term study from Sweden suggests that diet may influence how quickly those diseases accumulate. Researchers from Karolinska Institutet found that healthy eating patterns slowed the buildup of chronic diseases in older adults over 15 years. In contrast, diets linked to inflammation appeared to speed that process up. The findings followed more than 2,400 older adults and examined how four different dietary patterns affected aging and disease progression. “Our results show how important diet is in influencing the development of multimorbidity in ageing populations,” said co-first …

Scientists say they may be closer than ever to reversing aging

Scientists say they may be closer than ever to reversing aging

Published by Jenni Sidey

In old age, the liver’s DNA packaging starts to come undone. That breakdown does not change the genetic code itself. What it changes is the way the code is folded, packed, and managed inside the cell, which can decide which genes stay quiet and which ones switch on. A team at Bar-Ilan University now reports that it reversed many of those age-linked shifts in old mice by increasing levels of a protein called SIRT6. The work, published in Nature Communications, points to aging as something more dynamic than simple wear and tear. In the mouse liver, the researchers found that aging loosened chromatin, the molecular structure that organizes DNA, while pushing inflammatory genes into a more active state and weakening gene programs tied to normal metabolism. “As we age, the genome loses its proper organization,” said Prof. Haim Cohen, director of the Sagol Healthy Human Longevity Center at Bar-Ilan University’s Goodman Faculty of Life Sciences, who led the study. “Genes that should remain silent become activated, especially inflammatory genes, while genes required for normal liver …