Health & Medicine News

December 1, 2025

Top Headlines

New Brain Imaging Breakthrough Reveals Clues to Parkinson’s

Dec. 1, 2025 A high-speed “zap-and-freeze” method is giving scientists their clearest view yet of how brain cells send messages. By freezing tissue at the instant a signal fires, researchers revealed how synaptic vesicles behave in both mouse and human ...

Fructose May Quietly Supercharge Your Inflammation

Nov. 30, 2025 Researchers found that fructose can prime immune cells to overreact to bacterial toxins. In healthy adults, fructose-sweetened drinks increased receptors that trigger inflammation. This heightened sensitivity may contribute to greater infection ...

Scientists Find a Hidden Obesity Trigger in Soybean Oil

Nov. 30, 2025 Researchers at UC Riverside have uncovered why soybean oil, one of America's most widely consumed ingredients, drives significant weight gain—at least in mice. The findings point not to the oil itself but to the fat-derived molecules it produces ...

Your Skin Has a Built-in Cancer Defense and Sunlight Turns It Off

Nov. 30, 2025 Scientists have uncovered how too much sunlight can flip a hidden switch inside skin cells that makes inflammation spiral out of control and increases the risk of cancer. Their research reveals that UV radiation breaks down a protective protein ...

RSV Prevention in Newborns Could Cut Asthma Risk

Nov. 30, 2025 Scientists found that RSV infection early in life can set the stage for childhood asthma, particularly in kids already genetically prone to allergies. The virus appears to skew the developing immune system toward exaggerated responses to everyday ...

Simple Thyroid Check in Pregnancy May Lower Autism Risk

Nov. 29, 2025 Researchers have found that ongoing thyroid hormone imbalance in pregnancy may be linked to higher autism risk in children. Treated thyroid disorders did not show the same effect. The longer the imbalance lasted across trimesters, the more the risk ...

Millions Are About to Choose the Wrong Medicare Plan

Nov. 29, 2025 Millions face Medicare decisions each year, but many don’t take advantage of tools that can save them money and stress. Insurance marketing often overshadows unbiased options like SHIP, leaving people unaware of better choices. Comparing real ...

Hidden Blood Molecules Show Surprising Anti-aging Power

Nov. 29, 2025 Scientists have identified new anti-aging compounds produced by a little-studied blood bacterium. These indole metabolites were able to reduce inflammation, oxidative stress, and collagen-damaging activity in skin cell cultures. Three of the ...

Where Cannabis Stores Cluster, Emergency Visits Climb

Nov. 28, 2025 Researchers analyzed data from over six million people to see how close residents lived to cannabis retailers. Neighborhoods near these shops experienced higher cannabis-related emergency visits compared with those farther away. The effect was ...

Repeated Head Impacts May Quietly Break the Brain’s Cleanup System

Nov. 28, 2025 Researchers found that repeated head impacts can disrupt a key system that helps the brain wash away waste. In professional fighters, this system initially seems to work harder after trauma, then declines over time. MRI scans revealed that these ...

Scientists Find Toxic Metals Hidden in Popular Plastic Toys

Nov. 28, 2025 A large-scale Brazilian study found dangerous levels of toxic metals in popular children’s toys, with barium and lead topping the list. Researchers used sophisticated lab methods to identify 21 hazardous elements and test how easily they could be ...

Nov. 28, 2025 A major review across 73 countries finds that access to antiseizure medications is rising, but safe prescribing isn’t keeping pace. Valproate—linked to serious birth defects—remains widely used in many regions despite WHO warnings. Limited ...

Latest Headlines

updated 11:43am EST

Scientists Discover Hidden Wolf DNA in Most Dogs

Nov. 29, 2025 Researchers studying thousands of canine genomes discovered that wolf DNA is still present in most dog breeds. This ancient genetic influence shows up in traits like body size, behavior, and ...

Scientists Studied 47,000 Dogs on CBD and Found a Surprising Behavior Shift

Nov. 28, 2025 Data from over 47,000 dogs reveal that CBD is most often used in older pets with chronic health issues. Long-term CBD use was linked to reduced aggression, though other anxious behaviors didn’t ...

Bird Flu’s Surprising Heat Tolerance Has Scientists Worried

Nov. 28, 2025 Researchers discovered why bird flu can survive temperatures that stop human flu in its tracks. A key gene, PB1, gives avian viruses the ability to replicate even at fever-level heat. Mice ...

Polluted Air Quietly Erases the Benefits of Exercise

Nov. 28, 2025 Long-term inhalation of toxic air appears to dull the protective power of regular workouts, according to a massive global study spanning more than a decade and over a million adults. While exercise ...

Hidden Mitochondrial DNA Damage May Be a Missing Link in Disease

Nov. 28, 2025 Researchers identified a new, sticky form of mitochondrial DNA damage that builds up at dramatically higher levels than in nuclear DNA. These lesions disrupt energy production and activate ...

This Simple Warm-Up Trick Instantly Boosts Speed and Power

Nov. 27, 2025 Warming up significantly improves muscle performance, particularly speed and power, by increasing muscle temperature. Both passive heat methods and light exercise warm-ups work, but mimicking the ...

Why More Cannabis Users Are Landing in the ER With Severe Vomiting

Nov. 27, 2025 Chronic cannabis use is increasingly linked to recurring bouts of vomiting, now officially classified as cannabis hyperemesis syndrome. The new ICD code helps doctors identify cases more consistently ...

Stunning New 3D Images Reveal Yellow Fever’s Hidden Structure

Nov. 27, 2025 University of Queensland researchers visualized yellow fever virus particles at near-atomic detail, uncovering major structural differences between vaccine and virulent strains. The insights could ...

Half of Heart Attacks Strike People Told They’re Low Risk

Nov. 27, 2025 The study reveals that widely used heart-attack risk calculators fail to flag nearly half of those who will soon experience a cardiac event. Even the newer PREVENT model misclassifies many patients ...

Your Body May Already Have a Molecule That Helps Fight Alzheimer’s

Nov. 27, 2025 Spermine, a small but powerful molecule in the body, helps neutralize harmful protein accumulations linked to Alzheimer’s and Parkinson’s. It encourages these misfolded proteins to gather into ...

A Common Nutrient Deficiency May Be Silently Harming Young Brains

Nov. 27, 2025 Scientists studying young adults with obesity discovered early indicators of brain stress that resemble patterns seen in cognitive impairment. The group showed higher inflammation, signs of liver ...

How Personalized Algorithms Trick Your Brain Into Wrong Answers

Nov. 25, 2025 Personalized algorithms may quietly sabotage how people learn, nudging them into narrow tunnels of information even when they start with zero prior knowledge. In the study, participants using ...

Study Finds Untreated Sleep Apnea Doubles Parkinson’s Risk

Nov. 27, 2025 A massive veteran study found a strong connection between untreated sleep apnea and a higher chance of Parkinson’s. CPAP users had much lower odds of developing the condition. Researchers believe ...

A Hidden Brain Energy Signal Drives Depression and Anxiety

Nov. 26, 2025 Scientists discovered that lowered brain energy signaling in the hippocampus can lead to both depression- and anxiety-like behaviors in mice. Stress reduced ATP, a molecule important for cell energy ...

The Body Trait That Helps Keep Your Brain Young

Nov. 25, 2025 Scientists discovered that more muscle and less hidden abdominal fat are linked to a younger biological brain age. Deep visceral fat appeared to accelerate brain aging, while muscle mass offered a ...

Scientists Reveal a Hidden Alarm System Inside Your Cells

Nov. 25, 2025 Ribosomes don’t just make proteins—they can sense when something’s wrong. When they collide, they send out stress signals that activate a molecule called ZAK. Researchers uncovered how ZAK ...

Vegan Diet Beats Mediterranean for Weight Loss Even With Potatoes and Grains

Nov. 24, 2025 Participants lost more weight on a low-fat vegan diet than on the Mediterranean diet, largely due to eliminating animal foods and reducing oils and nuts. Increased intake of plant foods, even ...

Scientists Find Hidden Switch That Lets Tumors Shapeshift and Evade Treatment

Nov. 24, 2025 Scientists are uncovering what makes some carcinomas so resistant: their ability to change identity. Two new studies reveal crucial proteins and structures that could become targets for future ...

Nanoflowers Supercharge Stem Cells to Recharge Aging Cells

Nov. 27, 2025 Texas A&M researchers found a way to make stem cells produce double the normal number of mitochondria using nanoflower particles. These energized stem cells then transfer their surplus “power ...

Immune Cells Use a Surprising Trick to Heal Muscle Faster

Nov. 24, 2025 A research team has found that specific immune cells can connect with muscle fibers in a lightning-fast, neuron-like way to promote healing. These cells deliver quick pulses of calcium, triggering ...

Boosting One Protein Helps the Brain Protect Itself from Alzheimer’s

Nov. 23, 2025 Researchers discovered that raising the protein Sox9 can help the brain’s astrocytes clear out toxic plaque buildup linked to Alzheimer’s. In mouse models that already showed memory problems, ...

New Nasal Nanodrops Wipe out Brain Tumors in Mice

Nov. 22, 2025 A new nasal-delivered nanotherapy shows promise against aggressive glioblastoma tumors. By activating the STING immune pathway using gold-core spherical nucleic acids, researchers were able to reach ...

Simple Amino Acid Supplement Greatly Reduces Alzheimer’s Damage

Nov. 21, 2025 Researchers discovered that the common amino acid arginine can block harmful Aβ aggregation and reduce its toxic effects in Alzheimer’s disease models. In flies and mice, oral arginine lowered ...

A Drug Already in Trials May Stop Chemotherapy Nerve Damage

Nov. 21, 2025 Researchers discovered that chemotherapy can accidentally trigger a stress alarm in immune cells, causing inflammation that damages nerves. Blocking this alarm protected mice from nerve pain and kept ...

New Airflow Device Captures Indoor Germs Before They Spread

Nov. 21, 2025 A new airflow device from UBC Okanagan engineers traps exhaled aerosols almost immediately, sharply reducing pathogen exposure in indoor spaces. Early simulations suggest it could outperform existing ...

A Tiny Enzyme May Hold the Key to Safer Pain Relief

Nov. 23, 2025 Researchers have uncovered a surprising way the brain switches pain on, revealing that neurons can release an enzyme outside the cell that activates pain signals without disrupting normal movement or ...

Scientists Capture Stunning Real-Time Images of DNA Damage and Repair

Nov. 23, 2025 Scientists have created a live-cell DNA sensor that reveals how damage appears and disappears inside living cells, capturing the entire repair sequence as it unfolds. Instead of freezing cells at ...

This Tiny Pill Could Change How We Diagnose Gut Health

Nov. 21, 2025 Tiny ingestible spheres filled with engineered bacteria can detect intestinal bleeding by glowing when they encounter heme. Early tests in mice suggest they could become a quick, noninvasive way to ...

Tiny Microneedle Patch Dramatically Improves Heart Attack Recovery

Nov. 21, 2025 Researchers created a dissolvable microneedle patch that delivers IL-4 directly to damaged heart tissue, jump-starting repair after a heart attack. The targeted approach shifts immune cells into a ...

Stanford's New Cell Therapy Cures Type 1 Diabetes in Mice

Nov. 26, 2025 Researchers at Stanford found a way to cure or prevent Type 1 diabetes in mice using a combined blood stem cell and islet cell transplant. The procedure creates a hybrid immune system that stops ...