Health & Medicine

1. A surprisingly simple way to relieve knee arthritis pain without pills or surgery

   A surprisingly simple change in how you walk could help relieve knee arthritis pain and even slow joint damage. In a year-long clinical trial, researchers found that adjusting the angle of a person's foot while walking reduced osteoarthritis pain by an amount comparable to medication, without requiring drugs or surgery. Even more promising, MRI scans revealed that participants who adopted the personalized walking technique experienced slower deterioration in a marker of knee cartilage health.

2. A plastic once thought harmless may be fueling fatty liver disease

   One of the world's most common plastics may pose a hidden threat to liver health. Texas A&M researchers discovered that polyethylene microplastics can contribute to fatty liver disease, with potentially worse effects when combined with an unhealthy diet. Even more surprising, this widely used plastic was previously considered relatively harmless.

3. Eating olive oil before carbs has a surprising effect on blood sugar

   A simple change in the order you eat your food could help prevent blood sugar spikes. Scientists discovered that giving mice olive oil before carbohydrates slowed digestion and activated a surprising combination of hormones and nerve signals that helped regulate blood sugar, even in mice with type 2 diabetes.

4. Neanderthals may have used prehistoric glue as an ancient antibiotic

   Neanderthals may have used a sticky substance made from birch bark to treat wounds thousands of years before antibiotics existed. Researchers recreated ancient birch tar production techniques and discovered that every sample could inhibit the growth of bacteria responsible for dangerous wound infections. Previously known mainly as a prehistoric glue, birch tar may have doubled as a surprisingly effective natural medicine.

5. The eye has a hidden cleanup system scientists never knew existed

   Scientists have discovered a hidden cleanup system at the back of the eye that drains fluid and waste through a previously unknown pathway. The surprising finding, demonstrated in mice, could open the door to new treatments for glaucoma, macular degeneration, and other causes of blindness.

6. Scientists created a tiny device that can control your nerves to treat chronic pain

   Scientists have developed a tiny, injectable device that can control nerve activity without surgery, batteries, or wires, potentially transforming treatment for chronic pain and movement disorders. Powered wirelessly from outside the body, the seed-sized technology has shown promising results in early testing.

7. Scientists discover 5 hidden brain patterns behind depression

   Depression may not be one biological condition, but several distinct patterns of brain activity hiding under the same diagnosis. Researchers studying 263 people with depression identified five brain profiles, each showing different patterns of communication between brain regions and associations with symptoms such as anxiety, trauma, and substance abuse.

8. Only one workout helped older adults lose fat and keep muscle

   A six-month study suggests that high-intensity interval training (HIIT) may offer older adults a powerful advantage: losing body fat while keeping their muscle. Unlike moderate-intensity workouts, which led to a small loss of lean muscle, HIIT preserved it while also improving body composition around the waist.

9. Scientists warn a popular vitamin D supplement may have a hidden downside

   Not all vitamin D supplements are created equal, and new research suggests that one popular form may have an unexpected downside. Scientists found that taking vitamin D2 can actually lower the body's levels of vitamin D3, the form naturally produced by sunlight and more effective at boosting overall vitamin D. Previous studies also suggest that vitamin D3 may provide stronger immune protection against viruses and bacteria.

10. Bowel cancer “melted away” after immunotherapy, then stayed away

    A short course of immunotherapy before surgery may offer remarkably durable protection for some patients with stage two or three bowel cancer. In the NEOPRISM-CRC trial, 32 patients with a specific genetic form of bowel cancer received pembrolizumab for up to nine weeks before surgery instead of the usual post-surgery chemotherapy. After nearly three years of follow-up, none of the patients had experienced a cancer recurrence, including those who still had small traces of disease after treatment.

11. Bacteria turn a virus’ own weapon against it

    Researchers have uncovered a new way bacteria detect viral attacks: a virus-produced enzyme cuts a bacterial sensor protein, triggering a self-destructing immune response. The discovery could lead to more effective phage therapies against antibiotic-resistant bacteria and provide insight into ancient immune mechanisms shared with humans.

12. Taking antibiotics? Sugar may be making the damage worse

    Eating more sugar while taking antibiotics was linked to greater disruption of the gut microbiome and increased growth of potentially harmful bacteria. Researchers say temporarily cutting back on sweets during and after antibiotic treatment could be a simple way to reduce this damage, though clinical trials are still needed.

13. Scientists may have found why diabetic wounds refuse to heal

    Chronic diabetic wounds may fail to heal because immune cells remain locked in damaging inflammatory states instead of transitioning toward tissue repair. Researchers are exploring treatments that reprogram these immune responses, raising hopes for more targeted and effective therapies for diabetic ulcers.

14. Scientists tested 5 natural compounds on cancer cells. One stood out

    Five natural compounds, including curcumin and berberine, were tested for their effects on cancer cells and healthy muscle cells. All disrupted cancer cell energy production and pushed many of the cells into a non-dividing state, with curcumin producing the strongest overall effect. Curcumin also showed a relatively favorable safety profile, while some other compounds caused more toxicity.

15. FDA-approved epilepsy drug may help reverse osteoarthritis damage

    Researchers at Yale have identified a promising new approach to osteoarthritis that could do more than simply ease pain. The epilepsy drug lacosamide appears to block a protein involved in both pain signaling and cartilage destruction, helping damaged joints shift back toward repair in preclinical studies.