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A major study suggests glucosamine, a popular supplement for joint pain, could be linked to faster progression from mild cognitive impairment to Alzheimer's disease. Researchers found a 25% higher likelihood of developing dementia among glucosamine . ...

A common sign of hearing loss isn't complete silence -- it's struggling to follow conversations, especially in noisy places. Experts say hearing loss and tinnitus, the ringing or buzzing many people experience, often start when delicate cells inside ...

"Chemo brain" affects up to 80% of people receiving chemotherapy, making everyday tasks harder. In a new trial, cancer patients who followed a home-based exercise program showed better attention and fewer noticeable cognitive problems than those who ...

A study of more than 2,100 adults found that eating more ultra-processed foods was linked to poorer attention and slower mental processing, even among people with otherwise healthy diets. Researchers also found higher consumption was associated with ...

A surprising gut-heart connection may help explain why sleep apnea increases the risk of cardiovascular disease. In mice, disabling a bile acid receptor called FXR sharply reduced plaque buildup, opening the door to potential new treatments based on ...

Tea may help protect against heart disease, diabetes, cancer, cognitive decline, and age related muscle loss, according to a major review. But the way you drink it matters, since bottled and bubble teas often contain ingredients that can diminish tea ...

Scientists have uncovered a hidden immune system "brake" that may help cancers avoid being destroyed. The molecule, called SLAMF6, weakens the body's cancer-fighting T cells and can leave them exhausted over time. Researchers developed antibodies ...

The largest review ever conducted on opioids for acute pain found that these widely prescribed drugs often deliver only small, short-lived benefits. For many common conditions, including some surgeries and kidney stone pain, opioids performed no ...

Researchers have identified a new Alzheimer's target and created an experimental compound that blocks a damaging process inside brain cells. In mice, the treatment slowed nerve cell loss, reduced Alzheimer's-related changes, and even appeared to ...

Scientists have uncovered a key brain signal that helps us break old habits and adapt when circumstances suddenly change. By watching mice navigate a virtual maze, researchers found that disappointment--when an expected reward failed to appear- ...