Health & Medicine

1. Common forever chemicals linked to nearly double the rate of aggressive breast cancer

   An NIH study found that women with high levels of two common “forever chemicals” had up to 93% higher rates of an aggressive form of breast cancer. The discovery raises concerns about the potential health effects of persistent chemicals found in everyday products.

2. Without this protein, damaged muscle fills with fat and scar tissue

   Researchers have uncovered a surprising hidden function of a protein that may hold the key to repairing damaged muscles and treating muscular dystrophy. Known for protecting chromosomes, TRF2 also helps muscle stem cells maintain their identity and regenerate injured tissue. When scientists removed the protein in mice, muscles struggled to repair themselves, and muscular dystrophy progressed dramatically faster.

3. Scientists discover a common sugar may help cancer cells break free and spread

   Scientists have uncovered a surprising way that fructose, a sugar commonly found in sweetened foods and drinks, may help aggressive ovarian cancer spread. Researchers discovered that cancer cells surviving chemotherapy release fructose that weakens the bonds holding neighboring tumor cells together, making it easier for cancer to spread. High dietary fructose levels and cholesterol-lowering statins also produced concerning effects in preclinical experiments.

4. Animal vs. plant protein reveals a surprising testosterone divide

   A surprising new study suggests that where men get their protein may be linked to their testosterone levels. Researchers studying more than 2,500 men found that higher animal protein intake, particularly from dairy, was associated with lower testosterone, while plant protein was linked to higher levels. The findings raise intriguing questions about how everyday food choices might relate to male hormone levels.

5. Colorectal cancer is rising again after 20 years, and scientists don't know why

   Colorectal cancer is making an alarming comeback in the United States after more than 20 years of declining rates, and the increase is no longer limited to younger adults. A major new study found rising rates across nearly every age group under 70, including older Americans who have historically benefited most from cancer screening.

6. Walking and weight training may not be enough to keep your bones strong

   A surprising new study suggests that walking, jogging, and even traditional weight training may be less effective at stimulating bone formation than high-intensity sports involving explosive movements and sudden changes in direction. Researchers found that activities such as football and handball increased markers of bone formation by up to 46%, potentially revealing a better way to protect bones against aging and osteoporosis.

7. AI-powered bionic eye breakthrough could help the blind see again

   Scientists have developed an AI-powered approach that makes experimental bionic vision technology more precise, helping predict the flashes and shapes of light perceived by a blind man with a brain implant. By learning how an individual's brain responds to electrical stimulation, the technology could bring researchers closer to restoring some degree of sight to people with blindness.

8. Energy drinks linked to 11 times more reports of cardiac arrest

   A new study found that energy drinks and stimulant supplements were linked to disproportionately frequent reports of serious heart problems, including 11 times more reports of cardiac arrest and 4.5 times more reports of heart attacks. Young adults accounted for nearly half of the cardiovascular reports involving these products, raising concerns about their potential risks despite the study being unable to prove causation.

9. Even occasional marijuana use linked to 40% higher odds of stroke

   New research involving more than 440,000 Americans links cannabis use to increased cardiovascular risk, with occasional users showing 40% higher odds of reporting a history of stroke. The findings suggest that even infrequent marijuana use may warrant concern, although researchers have not established that cannabis directly causes strokes or heart disease.

10. Why heart attacks can still happen even when bad cholesterol is low

    Even when bad cholesterol is brought down to healthy levels, some people remain at risk of heart attacks, and scientists may have discovered why. Researchers identified two types of fat-carrying particles that appear to promote inflammation and damage blood vessels through mechanisms beyond cholesterol buildup.

11. Obesity linked to up to 27% lower risk of death in dementia

    A surprising study of more than 4,500 older adults found that people who were overweight or obese when diagnosed with dementia had a 16% to 27% lower risk of death than those at a normal weight. Researchers suspect that extra energy and muscle reserves may help patients survive the disease's toll on the body, although the reason for the survival advantage remains unclear.

12. Alzheimer’s may have early warning signs outside the brain

    A surprising discovery suggests that some early signs of Alzheimer’s disease may begin outside the brain. Using miniature laboratory systems made from human cells, scientists found that genetic mutations associated with inherited Alzheimer’s can disrupt nerve-to-muscle connections without any involvement from the brain or spinal cord. This could help explain why some patients experience changes in balance, walking, and coordination long before memory problems develop.

13. Common supplement could help fight psoriasis, scientists discover

    Scientists have discovered that pantethine, a readily available vitamin B5 derivative, can calm overactive immune cells and may help fight psoriasis. The supplement prevented psoriasis in mice and showed promising results in a small human trial, revealing an unexpected connection between cholesterol and autoimmune inflammation.

14. Common osteoporosis drugs linked to 24% lower dementia risk in major study

    A massive study of more than 120,000 older adults suggests that common osteoporosis drugs may reduce the risk of Alzheimer’s disease and other dementias by up to 24%. The surprising findings raise the possibility that medications already used to strengthen bones could also help protect the aging brain.

15. Cancer-fighting chewing gum slashes HPV levels by up to 93%

    A surprising new weapon against microbes linked to head and neck cancer could be as simple as chewing gum. Scientists developed a bioengineered gum that reduced HPV levels by up to 93% in oral samples from cancer patients and nearly eliminated two harmful bacterial species after a single dose of its extract. Even more promising, the treatment spared beneficial bacteria in the mouth.