https://www.sciencedaily.com/news/health_medicine/diseases_and_conditions/ Read the latest research on diseases and conditions, symptoms, new treatment options and more. Updated daily. en-us Fri, 06 Mar 2026 01:58:34 EST Fri, 06 Mar 2026 01:58:34 EST 60 https://www.sciencedaily.com/images/scidaily-logo-rss.png https://www.sciencedaily.com/news/health_medicine/diseases_and_conditions/ For more science news, visit ScienceDaily. https://www.sciencedaily.com/releases/2026/03/260305223204.htm Researchers created an AI-driven liquid biopsy that scans patterns in fragments of DNA circulating in the blood. The system detected early liver fibrosis and cirrhosis—conditions that often go unnoticed until serious damage occurs. By analyzing genome-wide DNA fragmentation patterns rather than specific mutations, the approach captures hidden signals about a person’s overall health. Early detection could help doctors treat liver disease sooner and potentially prevent cancer. Fri, 06 Mar 2026 00:20:31 EST https://www.sciencedaily.com/releases/2026/03/260305223204.htm https://www.sciencedaily.com/releases/2026/03/260304184235.htm Scientists have uncovered new genetic rules that determine whether the immune system’s “killer” T cells remain powerful long-term defenders or become worn out and ineffective. By building a detailed genetic atlas of CD8 T cell states, researchers identified key molecular switches that push these cells toward either resilience or exhaustion. Remarkably, disabling just two previously unknown genes restored the tumor-killing power of exhausted T cells while preserving their ability to provide lasting immune protection. Thu, 05 Mar 2026 22:19:10 EST https://www.sciencedaily.com/releases/2026/03/260304184235.htm https://www.sciencedaily.com/releases/2026/03/260304184223.htm Popular weight-loss drugs such as Ozempic, Wegovy, and Mounjaro may do more than help people shed pounds. New research suggests these GLP-1 medications could also help protect the heart after a heart attack by restoring blood flow in tiny blood vessels that often remain blocked even after doctors reopen a major artery. Wed, 04 Mar 2026 20:09:30 EST https://www.sciencedaily.com/releases/2026/03/260304184223.htm https://www.sciencedaily.com/releases/2026/03/260304184221.htm Scientists have uncovered a crucial weakness in the malaria parasite that could open the door to new treatments. Researchers identified a protein called Aurora-related kinase 1 (ARK1) that acts like a traffic controller during the parasite’s unusual cell division process, ensuring its genetic material is properly separated as it multiplies. When scientists switched off ARK1 in laboratory experiments, the parasite could no longer replicate correctly and failed to complete its life cycle in both humans and mosquitoes—effectively halting its ability to spread. Thu, 05 Mar 2026 00:03:04 EST https://www.sciencedaily.com/releases/2026/03/260304184221.htm https://www.sciencedaily.com/releases/2026/03/260304184215.htm A new experimental drug is showing remarkable promise for children with Dravet syndrome, a severe genetic form of epilepsy. In clinical trials, the treatment zorevunersen cut seizures by as much as 91% while also improving quality of life for many patients. The therapy works by boosting the function of a key gene involved in nerve cell signaling. Encouraging results have led researchers to launch a larger Phase 3 trial. Wed, 04 Mar 2026 21:14:30 EST https://www.sciencedaily.com/releases/2026/03/260304184215.htm https://www.sciencedaily.com/releases/2026/03/260303201807.htm Researchers at Kobe University have developed an AI system that can detect acromegaly, a rare hormone disorder, by analyzing photos of the back of the hand and a clenched fist. The disease often develops slowly and can take years to diagnose, even though untreated cases may shorten life expectancy. Wed, 04 Mar 2026 11:59:51 EST https://www.sciencedaily.com/releases/2026/03/260303201807.htm https://www.sciencedaily.com/releases/2026/03/260303145733.htm Daily aspirin does not reliably prevent bowel cancer in people at average risk, according to a major new review. Any potential protective effect may take more than a decade to appear — if it appears at all — and the evidence for that benefit is weak. In contrast, the risk of serious bleeding begins right away, even with low-dose aspirin. Experts warn that prevention decisions should be individualized, not automatic. Wed, 04 Mar 2026 18:12:30 EST https://www.sciencedaily.com/releases/2026/03/260303145733.htm https://www.sciencedaily.com/releases/2026/03/260303145730.htm A new study has uncovered why some brain cells are more resistant to Alzheimer’s damage than others. Researchers found a natural cleanup system that helps remove toxic tau protein before it can form harmful clumps. The study also shows that cellular stress can produce a dangerous tau fragment linked to Alzheimer’s. Strengthening the brain’s natural defenses could point the way to new treatments. Tue, 03 Mar 2026 21:38:45 EST https://www.sciencedaily.com/releases/2026/03/260303145730.htm https://www.sciencedaily.com/releases/2026/03/260303145725.htm Stiff knees and aching hips may seem like an inevitable part of aging, but experts say we’re getting osteoarthritis all wrong. Despite affecting nearly 600 million people worldwide — and potentially a billion by 2050 — the most powerful treatment isn’t surgery or medication. It’s exercise. Movement nourishes cartilage, strengthens muscles, reduces inflammation, and even reshapes the biological processes driving joint damage. Wed, 04 Mar 2026 16:35:02 EST https://www.sciencedaily.com/releases/2026/03/260303145725.htm https://www.sciencedaily.com/releases/2026/03/260303145705.htm A sweeping new study reveals that what’s on your plate may directly shape the pesticides circulating in your body. Researchers found that people who eat more fruits and vegetables known to carry higher pesticide residues—such as strawberries, spinach, and bell peppers—also have significantly higher levels of those chemicals in their urine. While produce remains a cornerstone of a healthy diet, the findings highlight how everyday food choices can drive real-world exposure to substances linked to cancer, hormone disruption, and developmental harm. Wed, 04 Mar 2026 13:09:52 EST https://www.sciencedaily.com/releases/2026/03/260303145705.htm https://www.sciencedaily.com/releases/2026/03/260303050633.htm Scientists have uncovered a surprising new hero in the fight against one of the world’s deadliest fungal infections: albumin, the most abundant protein in human blood. In a major international study, researchers found that people who develop mucormycosis — a fast-moving and often fatal “black fungus” infection — have strikingly low levels of albumin, and that this deficiency strongly predicts death. Tue, 03 Mar 2026 14:56:04 EST https://www.sciencedaily.com/releases/2026/03/260303050633.htm https://www.sciencedaily.com/releases/2026/03/260303050626.htm When a bone break is too severe to heal on its own, surgeons often rely on grafts or rigid metal implants — but both come with serious drawbacks. Now, researchers at ETH Zurich have created a jelly-like hydrogel that mimics the body’s natural healing process, offering a potentially game-changing alternative. Made of 97% water, this soft material can be laser-printed into intricate bone-like structures at record-breaking speeds, down to details thinner than a human hair. Tue, 03 Mar 2026 12:31:18 EST https://www.sciencedaily.com/releases/2026/03/260303050626.htm https://www.sciencedaily.com/releases/2026/03/260303050624.htm Scientists have identified a crucial molecular switch that decides whether pancreatic cancer cells resist chemotherapy or respond to it. The key player, a gene called GATA6, keeps tumours in a more structured and treatable form—but it gets shut down by an overactive KRAS-driven pathway. When researchers blocked that pathway, GATA6 levels rebounded and cancer cells became more sensitive to chemo. The discovery could help turn some of the toughest pancreatic tumours into ones doctors can better control. Tue, 03 Mar 2026 11:33:04 EST https://www.sciencedaily.com/releases/2026/03/260303050624.htm https://www.sciencedaily.com/releases/2026/03/260302030657.htm Polyamines—natural molecules found in every living cell—have become stars in the longevity world for their ability to boost cellular cleanup and support healthy aging. But there’s a dark twist: high levels of these same molecules are consistently seen in cancer, where tumors grow aggressively. Mon, 02 Mar 2026 06:13:04 EST https://www.sciencedaily.com/releases/2026/03/260302030657.htm https://www.sciencedaily.com/releases/2026/03/260302030652.htm Surviving cancer at a young age may come with an unexpected cost: faster aging at both the cellular and brain levels. Researchers found that survivors often show signs of being biologically older than their actual age, with chemotherapy accelerating the process most dramatically. This accelerated aging is linked to struggles with memory and focus, which can ripple into education and career outcomes. Encouragingly, scientists believe healthy habits like exercise may help turn back the clock. Mon, 02 Mar 2026 12:11:26 EST https://www.sciencedaily.com/releases/2026/03/260302030652.htm https://www.sciencedaily.com/releases/2026/03/260302030648.htm Researchers are developing a two-part therapy for type 1 diabetes: lab-made insulin-producing cells paired with custom-engineered immune cells that protect them. The goal is to stop the immune system from destroying transplanted cells — without using immunosuppressive drugs. Backed by $1 million in funding, the team hopes to create a ready-to-use treatment that could work even for people who have had diabetes for years. The approach could transform how the disease is treated. Mon, 02 Mar 2026 11:49:16 EST https://www.sciencedaily.com/releases/2026/03/260302030648.htm https://www.sciencedaily.com/releases/2026/03/260302030642.htm As millions turn to ChatGPT and other AI chatbots for therapy-style advice, new research from Brown University raises a serious red flag: even when instructed to act like trained therapists, these systems routinely break core ethical standards of mental health care. In side-by-side evaluations with peer counselors and licensed psychologists, researchers uncovered 15 distinct ethical risks — from mishandling crisis situations and reinforcing harmful beliefs to showing biased responses and offering “deceptive empathy” that mimics care without real understanding. Mon, 02 Mar 2026 10:04:35 EST https://www.sciencedaily.com/releases/2026/03/260302030642.htm https://www.sciencedaily.com/releases/2026/03/260302030640.htm A tiny wireless implant is giving new hope to people blinded by advanced age-related macular degeneration. In a major international clinical trial, more than 80% of participants regained meaningful central vision, with many able to read letters and even words again after years of decline. The device replaces damaged light-sensing cells in the retina with a 2×2 mm implant that converts light into electrical signals, restoring communication between the eye and the brain. Mon, 02 Mar 2026 07:25:50 EST https://www.sciencedaily.com/releases/2026/03/260302030640.htm https://www.sciencedaily.com/releases/2026/03/260301190359.htm Scientists have uncovered a powerful genetic switch that helps some of the body’s most important immune cells grow up properly and keep our organs healthy. The switch, called MafB, guides immature precursor cells as they develop into macrophages, the body’s clean-up and repair crew that removes pathogens, clears debris, recycles iron, and supports tissue function. When MafB is missing, these cells remain stuck in an underdeveloped state and cannot fully carry out their protective roles. Sun, 01 Mar 2026 19:19:16 EST https://www.sciencedaily.com/releases/2026/03/260301190359.htm https://www.sciencedaily.com/releases/2026/02/260228093505.htm Scientists at Rice University have produced the first full, dye-free molecular atlas of an Alzheimer’s brain. By combining laser-based imaging with machine learning, they uncovered chemical changes that spread unevenly across the brain and extend beyond amyloid plaques. Key memory regions showed major shifts in cholesterol and energy-related molecules. The findings hint that Alzheimer’s is a whole-brain metabolic disruption—not just a protein problem. Sun, 01 Mar 2026 10:16:01 EST https://www.sciencedaily.com/releases/2026/02/260228093505.htm https://www.sciencedaily.com/releases/2026/02/260228093502.htm That photogenic cup of bubble tea may come with hidden downsides. Tapioca pearls made from cassava can absorb heavy metals like lead, and in large amounts they may slow digestion or even cause blockages. The drink is often loaded with sugar—sometimes more than soda—raising risks for cavities, obesity, diabetes, and fatty liver disease. There are even reports linking frequent consumption to kidney stones and poorer mental health. Sun, 01 Mar 2026 09:45:49 EST https://www.sciencedaily.com/releases/2026/02/260228093502.htm https://www.sciencedaily.com/releases/2026/02/260228093456.htm Scientists at Oregon State University have engineered a powerful new nanomaterial that zeroes in on cancer cells and destroys them from the inside out. Designed to exploit cancer’s unique chemistry—its acidity and high hydrogen peroxide levels—the tiny iron-based structure sparks not one but two intense chemical reactions, flooding tumors with cell-damaging oxygen molecules. This dual attack overwhelms cancer cells with oxidative stress while sparing healthy tissue. Sun, 01 Mar 2026 09:09:30 EST https://www.sciencedaily.com/releases/2026/02/260228093456.htm https://www.sciencedaily.com/releases/2026/02/260228093440.htm Struggling to fall asleep and stopping breathing at night may be a far riskier combo than previously thought. In a study of nearly a million veterans, researchers found that having both insomnia and sleep apnea dramatically raises the risk of hypertension and heart disease. The two conditions don’t just coexist—they interact in ways that intensify strain on the heart. Addressing sleep problems early could help prevent cardiovascular disease before it starts. Sun, 01 Mar 2026 04:07:43 EST https://www.sciencedaily.com/releases/2026/02/260228093440.htm https://www.sciencedaily.com/releases/2026/02/260228093435.htm Scientists are taking a closer look at the pill forms of Wegovy and Ozempic. In an animal study, the ingredient SNAC, which helps semaglutide survive the stomach and enter the bloodstream, was associated with changes in gut bacteria, inflammation markers, and a brain linked protein. The research does not show harm in people, but it raises new questions about the long term effects of daily exposure. Sun, 01 Mar 2026 02:34:00 EST https://www.sciencedaily.com/releases/2026/02/260228093435.htm https://www.sciencedaily.com/releases/2026/02/260228082723.htm Drug-resistant bacteria are becoming harder to treat, pushing scientists to look for new antibiotic targets. Researchers have now discovered that several unrelated viruses disable a key bacterial protein called MurJ, which is essential for building the bacterial cell wall. High-resolution imaging shows these viral proteins lock MurJ into a single position, stopping cell wall construction and leading to bacterial death. Sat, 28 Feb 2026 09:20:04 EST https://www.sciencedaily.com/releases/2026/02/260228082723.htm https://www.sciencedaily.com/releases/2026/02/260228082717.htm Scientists have built a massive cellular atlas showing how aging reshapes the body across 21 organs. Studying nearly 7 million cells, they found that aging starts earlier than expected and unfolds in a coordinated way throughout the body. About a quarter of cell types change in number over time, and many of these shifts differ between males and females. The research also highlights shared genetic “hotspots” that could become targets for anti-aging therapies. Sat, 28 Feb 2026 10:25:43 EST https://www.sciencedaily.com/releases/2026/02/260228082717.htm https://www.sciencedaily.com/releases/2026/02/260227071940.htm Scientists at Texas A&M are turning an everyday pick-me-up into a high-tech medical switch. By combining caffeine with CRISPR gene editing, researchers have created a system that allows cells to be programmed in advance — and then activated simply by consuming a small dose of caffeine from coffee, chocolate, or soda. The approach, known as chemogenetics, lets scientists precisely turn gene-editing activity on and off inside targeted cells, including powerful immune T cells that can fight cancer. Sat, 28 Feb 2026 09:03:20 EST https://www.sciencedaily.com/releases/2026/02/260227071940.htm https://www.sciencedaily.com/releases/2026/02/260227071914.htm Researchers found that cutting two amino acids common in animal protein—methionine and cysteine—made mice burn significantly more energy. The boost in heat production was nearly as powerful as constant exposure to cold temperatures. The mice didn’t eat less or exercise more; they simply generated more heat in their beige fat. The discovery hints that diet alone might activate the body’s calorie-burning machinery. Fri, 27 Feb 2026 13:05:43 EST https://www.sciencedaily.com/releases/2026/02/260227071914.htm https://www.sciencedaily.com/releases/2026/02/260227061818.htm Heart disease is on track to tighten its grip on American women. New projections from the American Heart Association warn that over the next 25 years, cardiovascular disease will rise sharply, driven largely by a surge in high blood pressure, diabetes, and obesity. By 2050, nearly 60% of women in the U.S. could have high blood pressure, and close to one in three women ages 22 to 44 may already be living with some form of heart disease. Fri, 27 Feb 2026 06:18:18 EST https://www.sciencedaily.com/releases/2026/02/260227061818.htm https://www.sciencedaily.com/releases/2026/02/260226042458.htm A massive study of more than 270,000 people has uncovered a surprising link between a common amino acid and how long men live. Researchers found that higher levels of tyrosine—an amino acid found in protein-rich foods and often marketed as a focus-boosting supplement—were associated with shorter life expectancy in men, potentially trimming nearly a year off lifespan. Thu, 26 Feb 2026 12:31:50 EST https://www.sciencedaily.com/releases/2026/02/260226042458.htm https://www.sciencedaily.com/releases/2026/02/260226042449.htm “Forever chemicals” known as PFAS have quietly infiltrated everything from nonstick pans to food packaging—and now new research suggests some of them may be speeding up the aging process itself. In a nationally representative U.S. study, two lesser-known PFAS compounds, PFNA and PFOSA, were found in 95% of participants and strongly linked to faster biological aging in men aged 50 to 64. Thu, 26 Feb 2026 04:24:49 EST https://www.sciencedaily.com/releases/2026/02/260226042449.htm https://www.sciencedaily.com/releases/2026/02/260226042447.htm Biomolecular condensates were long believed to be simple liquid blobs inside cells. Researchers have now uncovered that some are actually supported by fine protein filaments forming an internal scaffold. When this structure is disrupted, cells fail to grow and divide properly. The discovery suggests scientists may one day design drugs that target condensate architecture to fight cancer and neurodegenerative disease. Thu, 26 Feb 2026 09:36:27 EST https://www.sciencedaily.com/releases/2026/02/260226042447.htm https://www.sciencedaily.com/releases/2026/02/260225081217.htm Eating nothing but oatmeal for just two days might sound extreme, but it delivered a striking payoff in a new clinical trial. People with metabolic syndrome who followed a short, calorie-reduced oat-based plan saw their harmful LDL cholesterol drop by 10%, along with modest weight loss and lower blood pressure. Even more surprising, the cholesterol benefits were still visible six weeks later. Wed, 25 Feb 2026 11:37:57 EST https://www.sciencedaily.com/releases/2026/02/260225081217.htm https://www.sciencedaily.com/releases/2026/02/260225081214.htm Avoiding meat might slightly lower the odds of reaching 100 — but only for frail, underweight seniors. In very old age, staying strong and maintaining muscle matters more than long-term disease prevention. Older adults who included fish, eggs, or dairy were just as likely to become centenarians as meat eaters, suggesting that key nutrients may make the difference. The takeaway: nutrition needs change dramatically with age. Thu, 26 Feb 2026 03:57:06 EST https://www.sciencedaily.com/releases/2026/02/260225081214.htm https://www.sciencedaily.com/releases/2026/02/260225081208.htm A sweeping new analysis of the evidence suggests that exercise therapy — long promoted as a first-line treatment for osteoarthritis — may offer only small and short-lived relief, and in some cases might be no better than doing nothing at all. After reviewing dozens of clinical trials involving more than 13,000 participants, researchers found that benefits for knee osteoarthritis pain were minimal and tended to shrink in larger or longer-term studies. Wed, 25 Feb 2026 23:43:58 EST https://www.sciencedaily.com/releases/2026/02/260225081208.htm https://www.sciencedaily.com/releases/2026/02/260225081205.htm Worrying about getting older—especially fearing future health problems—may actually speed up aging at the cellular level, according to new research from NYU. In a study of more than 700 women, those who felt more anxious about aging showed signs of faster biological aging in their blood, measured using cutting-edge “epigenetic clocks.” Fears about declining health had the strongest link, while concerns about beauty or fertility didn’t appear to have the same biological impact. Thu, 26 Feb 2026 08:14:43 EST https://www.sciencedaily.com/releases/2026/02/260225081205.htm https://www.sciencedaily.com/releases/2026/02/260225081159.htm Popular acid reflux drugs such as Prilosec, Nexium, and Protonix may carry hidden risks when taken long term. A new study found that extended use disrupted iron and calcium levels in rats, changes associated with anemia and osteoporosis risk. Researchers also observed shifts in mineral balance across multiple organs. Experts say the medications are effective, but prolonged use without medical guidance could have unintended consequences. Thu, 26 Feb 2026 07:27:39 EST https://www.sciencedaily.com/releases/2026/02/260225081159.htm https://www.sciencedaily.com/releases/2026/02/260225081153.htm A shingles shot might do more than prevent a painful rash — it could actually help slow down the aging process. In a large national study of more than 3,800 Americans age 70 and older, those who received the shingles vaccine showed slower biological aging compared to those who didn’t. Researchers found lower levels of chronic inflammation and slower changes in gene activity linked to aging, suggesting the vaccine may calm the body’s “inflammaging” — the low-grade inflammation tied to heart disease, frailty, and cognitive decline. Thu, 26 Feb 2026 02:47:45 EST https://www.sciencedaily.com/releases/2026/02/260225081153.htm https://www.sciencedaily.com/releases/2026/02/260225081150.htm Scientists have zeroed in on a critical weak spot behind a rare but devastating brain autoimmune disorder often known as “Brain on Fire.” The disease strikes when the immune system attacks NMDA receptors—key molecules involved in memory and thinking—leading to psychiatric symptoms, seizures, and even death. Wed, 25 Feb 2026 11:08:42 EST https://www.sciencedaily.com/releases/2026/02/260225081150.htm https://www.sciencedaily.com/releases/2026/02/260225081142.htm A gel-like sugar coating on immune cells has been found to play a starring role in psoriasis. Researchers discovered that immune cells shed this outer layer to help them exit the bloodstream and enter inflamed skin. This challenges the long-held idea that only blood vessel walls changed during this process. The finding could help guide new therapies aimed at controlling harmful inflammation. Wed, 25 Feb 2026 08:11:42 EST https://www.sciencedaily.com/releases/2026/02/260225081142.htm https://www.sciencedaily.com/releases/2026/02/260225001250.htm Researchers have detected microplastics in nearly all prostate cancer tumors examined in a new study. Tumor tissue contained about 2.5 times more plastic than nearby healthy prostate tissue. Scientists say this is the first Western study to directly measure plastic particles in prostate tumors. More research is needed, but the findings suggest microplastic exposure could play a role in cancer development. Wed, 25 Feb 2026 01:28:19 EST https://www.sciencedaily.com/releases/2026/02/260225001250.htm https://www.sciencedaily.com/releases/2026/02/260224023159.htm Subtle changes in brain blood flow and oxygen use are closely linked to hallmark signs of Alzheimer’s, including amyloid plaques and memory-related brain shrinkage. Simple, noninvasive scans may one day help spot risk earlier—by looking at the brain’s vascular health, not just its plaques. Tue, 24 Feb 2026 10:21:58 EST https://www.sciencedaily.com/releases/2026/02/260224023159.htm https://www.sciencedaily.com/releases/2026/02/260224023103.htm A weeklong, high-intensity version of TMS may work nearly as well as the standard six-week treatment for depression. In a UCLA study, patients who received five sessions a day for five days experienced meaningful symptom relief comparable to those on the traditional schedule. Some who didn’t improve immediately showed strong gains weeks later. The findings hint at a faster, more accessible path to recovery. Wed, 25 Feb 2026 05:08:45 EST https://www.sciencedaily.com/releases/2026/02/260224023103.htm https://www.sciencedaily.com/releases/2026/02/260224023101.htm Researchers are engineering bacteria to invade tumors and consume them from the inside. Because tumor cores lack oxygen, they’re the perfect breeding ground for these microbes. The team added a genetic tweak that helps the bacteria survive longer near oxygen-exposed edges — but only once enough of them are present to trigger the change. It’s a carefully programmed biological attack that could one day offer a new way to destroy cancer. Tue, 24 Feb 2026 03:41:46 EST https://www.sciencedaily.com/releases/2026/02/260224023101.htm https://www.sciencedaily.com/releases/2026/02/260224015537.htm A sweeping nationwide study has found that U.S. counties located closer to operating nuclear power plants have higher cancer death rates than those farther away. Researchers analyzed data from every nuclear facility and all U.S. counties between 2000 and 2018, adjusting for income, education, smoking, obesity, environmental conditions, and access to health care. Even after accounting for those factors, cancer mortality was higher in communities nearer to nuclear plants, particularly among older adults. Tue, 24 Feb 2026 02:26:50 EST https://www.sciencedaily.com/releases/2026/02/260224015537.htm https://www.sciencedaily.com/releases/2026/02/260222092324.htm People whose sugar intake was restricted before birth and in early childhood had markedly lower rates of heart disease later in life. Compared to those never exposed to rationing, their risks of heart attack, stroke, heart failure, and cardiovascular death were cut by roughly 20–30%. Mon, 23 Feb 2026 09:21:48 EST https://www.sciencedaily.com/releases/2026/02/260222092324.htm https://www.sciencedaily.com/releases/2026/02/260222092317.htm Training harder may do more than build muscle—it could transform your gut. Researchers found that intense workouts change the balance of bacteria and important compounds in athletes’ digestive systems. When training loads dropped, diet quality slipped and digestion slowed, triggering different microbial shifts. These hidden changes might influence performance in ways scientists are only beginning to understand. Mon, 23 Feb 2026 23:45:43 EST https://www.sciencedaily.com/releases/2026/02/260222092317.htm https://www.sciencedaily.com/releases/2026/02/260222092258.htm Scientists at Stanford Medicine have unveiled a bold new kind of “universal” vaccine that could one day protect against everything from COVID-19 and the flu to bacterial pneumonia and even common allergens. Instead of targeting a specific virus or bacterium, the nasal spray vaccine supercharges the lungs’ own immune defenses, keeping them on high alert for months. In mice, it slashed viral levels, prevented severe illness, and even blocked allergic reactions. Mon, 23 Feb 2026 08:45:18 EST https://www.sciencedaily.com/releases/2026/02/260222092258.htm https://www.sciencedaily.com/releases/2026/02/260222085209.htm Babies born in the early 2000s were exposed in the womb to far more “forever chemicals” than researchers once realized, according to a new study. By using advanced chemical screening on umbilical cord blood, scientists detected 42 different PFAS compounds, including many that standard tests do not routinely check for. These long lasting chemicals are found in common products like nonstick cookware, food packaging, and stain resistant fabrics, and they can build up in the body over time. Mon, 23 Feb 2026 07:29:47 EST https://www.sciencedaily.com/releases/2026/02/260222085209.htm https://www.sciencedaily.com/releases/2026/02/260222085203.htm Scientists have created a blood test that can estimate when Alzheimer’s symptoms are likely to begin. By measuring a protein called p-tau217, the model predicts symptom onset within roughly three to four years. The protein mirrors the silent buildup of amyloid and tau in the brain long before memory loss appears. This advance could speed up preventive drug trials and eventually guide personalized care. Mon, 23 Feb 2026 06:46:07 EST https://www.sciencedaily.com/releases/2026/02/260222085203.htm https://www.sciencedaily.com/releases/2026/02/260221060952.htm Living at high altitude appears to protect against diabetes, and scientists have finally discovered the reason. When oxygen levels drop, red blood cells switch into a new metabolic mode and absorb large amounts of glucose from the blood. This helps the body cope with thin air while also reducing blood sugar levels. A drug that recreates this effect reversed diabetes in mice, hinting at a powerful new treatment strategy. Sat, 21 Feb 2026 08:43:47 EST https://www.sciencedaily.com/releases/2026/02/260221060952.htm https://www.sciencedaily.com/releases/2026/02/260221060946.htm Running extreme distances may strain more than just muscles and joints. New research suggests ultramarathons can alter red blood cells in ways that make them less flexible and more prone to breakdown, potentially interfering with how they deliver oxygen throughout the body. Scientists found signs of both mechanical stress from intense blood flow and molecular damage linked to inflammation and oxidative stress. Sat, 21 Feb 2026 07:59:29 EST https://www.sciencedaily.com/releases/2026/02/260221060946.htm https://www.sciencedaily.com/releases/2026/02/260221060942.htm Researchers tested whether generative AI could handle complex medical datasets as well as human experts. In some cases, the AI matched or outperformed teams that had spent months building prediction models. By generating usable analytical code from precise prompts, the systems dramatically reduced the time needed to process health data. The findings hint at a future where AI helps scientists move faster from data to discovery. Sat, 21 Feb 2026 06:17:29 EST https://www.sciencedaily.com/releases/2026/02/260221060942.htm https://www.sciencedaily.com/releases/2026/02/260221000332.htm Researchers have mapped the genetic risk of hemochromatosis across the UK and Ireland for the first time, uncovering striking hotspots in north-west Ireland and the Outer Hebrides. In some regions, around one in 60 people carry the high-risk gene variant linked to iron overload. The condition can take decades to surface but may lead to liver cancer and arthritis if untreated. Sat, 21 Feb 2026 09:38:45 EST https://www.sciencedaily.com/releases/2026/02/260221000332.htm https://www.sciencedaily.com/releases/2026/02/260221000321.htm A common bacterium best known for causing pneumonia and sinus infections may also play a surprising role in Alzheimer’s disease. Researchers found that Chlamydia pneumoniae can invade the retina and brain, where it sparks inflammation, nerve cell death, and the buildup of amyloid-beta—the hallmark protein linked to Alzheimer’s. Higher levels of the bacterium were found in people with Alzheimer’s, especially those carrying the high-risk APOE4 gene, and were tied to more severe cognitive decline. Sat, 21 Feb 2026 00:43:23 EST https://www.sciencedaily.com/releases/2026/02/260221000321.htm https://www.sciencedaily.com/releases/2026/02/260221000317.htm A sweeping new scientific review suggests that pecans — America’s native nut — may pack more heart power than many people realize. After analyzing over 20 years of research, scientists found consistent evidence that eating pecans can improve key markers of cardiovascular health, including total cholesterol and “bad” LDL cholesterol, while also supporting antioxidant defenses. Sun, 22 Feb 2026 08:52:17 EST https://www.sciencedaily.com/releases/2026/02/260221000317.htm https://www.sciencedaily.com/releases/2026/02/260221000255.htm Chronic wounds often spiral out of control because oxygen can’t reach the deepest layers of injured tissue. A new gel developed at UC Riverside delivers a continuous flow of oxygen right where it’s needed most, using a tiny battery-powered system. In high-risk mice, wounds healed in weeks instead of worsening. The innovation could dramatically reduce amputations—and may even open doors for lab-grown organs. Sun, 22 Feb 2026 08:14:18 EST https://www.sciencedaily.com/releases/2026/02/260221000255.htm https://www.sciencedaily.com/releases/2026/02/260220010836.htm Breathing polluted air may do more than harm your lungs — it could also increase your risk of Alzheimer’s disease. In a sweeping study of nearly 28 million older Americans, researchers found that long term exposure to fine particle air pollution was linked to a higher likelihood of developing Alzheimer’s. The connection appeared to stem largely from pollution’s direct effects on the brain, rather than through related health conditions like hypertension or depression. Fri, 20 Feb 2026 01:47:05 EST https://www.sciencedaily.com/releases/2026/02/260220010836.htm https://www.sciencedaily.com/releases/2026/02/260219232620.htm A sweeping new study has uncovered a troubling mix of hazardous chemicals in popular hair extensions, including products made from human hair. Researchers detected dozens of substances linked to cancer, hormone disruption, reproductive harm, and immune system effects in nearly every sample tested. Some products contained flame retardants, organotins, and chemicals associated with increased breast cancer risk, and several exceeded European safety thresholds. Thu, 19 Feb 2026 23:31:46 EST https://www.sciencedaily.com/releases/2026/02/260219232620.htm https://www.sciencedaily.com/releases/2026/02/260219040820.htm A groundbreaking clinical trial is testing whether specially engineered stem cells can help the brain restore its own dopamine production in people with Parkinson’s disease. Because the condition is driven by the gradual loss of dopamine-producing cells—leading to tremors, stiffness, and slowed movement—researchers are implanting lab-grown cells directly into the brain’s movement center to replace what’s been lost. Fri, 20 Feb 2026 04:03:58 EST https://www.sciencedaily.com/releases/2026/02/260219040820.htm