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Low testosterone linked to 18% higher risk of dying from cancer

A major international study tracking more than 26,000 men found that very low testosterone levels were associated with an 18% higher risk of dying from cancer later in life. Surprisingly, testosterone itself showed no clear link to prostate cancer, although two other sex hormones did. Researchers believe low testosterone could be an important early warning sign of future health risks, particularly when levels fall below 8.6 nmol/L.

Health

Major trial challenges how doctors decide who really needs statins

A study of nearly 5,800 adults found that heart scans measuring calcium buildup in the arteries led to the same observed rate of major cardiovascular events as traditional risk assessments, despite recommending statins to far fewer patients. Surprisingly, patients advised to take statins based on their scans were nearly three times as likely to stick with their medication, raising intriguing questions about how doctors should identify and treat heart disease risk.

Science

Scientists find surprisingly little evidence that medical cannabis helps you sleep

A major new review challenges the growing enthusiasm for medical cannabis as an insomnia treatment, finding little reliable evidence that it improves sleep quality, sleep duration, or daytime functioning. Researchers caution that this doesn't mean cannabis is ineffective, only that existing studies are too weak to establish whether it works.

Science

75,000-year-old Neanderthal may have been killed by a spear aimed at the heart

A Neanderthal who died 75,000 years ago may have been killed by a wooden spear deliberately aimed at the heart, revealing rare evidence of prehistoric violence. A circular hole in the shoulder blade suggests the weapon pierced the chest and caused a rapidly fatal injury. Surprisingly, the same individual had survived an earlier devastating facial injury, suggesting other Neanderthals provided care and support.

Science

The surprisingly simple exercise that could lower your blood pressure

A surprisingly simple exercise routine could help lower blood pressure without requiring daily workouts or expensive equipment. In a study of 100 adults, researchers found that wall squats performed just once or twice a week helped maintain significant reductions in systolic blood pressure over the short term.

Science

Cornell scientists identify rare human genetic disorder in two unusually long-legged cats

Two unusually long-legged cats have helped scientists uncover the first genetically confirmed cases of Marfan syndrome in domestic felines. Researchers at Cornell University discovered that the brothers carried two altered copies of a gene linked to the rare connective tissue disorder, which can affect the eyes, heart, and blood vessels. Surprisingly, the cats survived into adulthood because their genetic mutation still allowed some normal function.

Science

Scientists uncover a hidden map of the brain with 539 distinct regions

Scientists have uncovered a hidden layer of organization in the brain by creating the first detailed 3D map of its lipids, the fatty molecules essential for brain structure and communication. By analyzing millions of measurements from mouse brains, researchers identified 539 distinct chemical zones, revealing patterns and boundaries that traditional brain maps have missed. Surprisingly, even white matter, once thought to be relatively uniform, contains a complex patchwork of chemically distinct regions.

Science

Just 10 minutes of daily exercise could unlock deeper sleep

Getting better sleep might be as simple as moving a little more every day. Researchers at The University of Texas at Austin found that people who exercised more frequently experienced more deep, restorative sleep, which is essential for brain recovery, memory, and emotional well-being. Surprisingly, just 10 minutes of moderate to vigorous exercise per day was associated with measurable benefits, while even light activities like walking and standing breaks were linked to better sleep and mood.

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Scientists make stunning discovery that could help explain why life exists

Scientists have discovered that the universe's fundamental physical constants may be finely balanced to make life possible. Even tiny changes to these constants could make liquids too thick or too thin for essential biological processes, potentially preventing life as we know it. Surprisingly, these life-friendly conditions existed billions of years before living cells appeared. The findings raise intriguing questions about why the laws of physics seem so well suited to life.

Health

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.

Science

Ultra-processed foods linked to hidden muscle fat that may threaten your knees

Eating more ultra-processed foods was linked to greater fat buildup inside thigh muscles, according to MRI scans of 615 adults at risk for knee osteoarthritis. Surprisingly, the association remained even after researchers accounted for calorie intake, physical activity, and other factors. Fatty changes in these muscles may weaken support around the knee and potentially increase osteoarthritis risk.