Aggregator

Drop in those receiving grants and fellowships in 2025 shows impact of Trump administration rollbacks to diversity initiatives

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 users and uncovered biological clues that may explain why.

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 the ear become damaged from aging or long-term noise exposure. Beyond making it harder to hear, these conditions can affect sleep, concentration, mood, and even increase the risk of falls and cognitive decline.

Don’t expect pathogens to steal the show, says research group that studied the risk of visiting fans spreading infections

JUNO could beat much bigger and more expensive rivals to order neutrinos by mass

“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 received a placebo. Low-dose ibuprofen also improved some cognitive measures, though its effects were less consistent.

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 increased dementia risk factors, raising concerns about the hidden cognitive costs of heavily processed foods.

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 gut microbes and their chemical signals.

DNA from ground squirrel coprolites offers an unusually detailed record of ice age ecosystems

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's health benefits.

Altered astrocyte-microglia interactions have been implicated in the pathogenesis of Alzheimer's disease, but the underpinning mechanisms remain unclear. Zhang and colleagues show that astrocytic PAD2-mediated citrullination of vimentin activates microglia, worsens Aβ accumulation, and exacerbates cognitive deficits. These findings highlight astrocyte-microglia crosstalk as a potential therapeutic target for Alzheimer's disease.

Mitochondrial DNA (mtDNA)-driven innate immune signaling sustains chronic neuroinflammation in neurological diseases such as Alzheimer's disease (AD), yet how this pathway is regulated in microglia remains poorly understood. Here, we identify the histone acetyltransferase KAT7 (HBO1) as a central epigenetic regulator that links chromatin remodeling to mitochondrial immune activation. KAT7 and its histone mark H3K14ac are elevated in microglia from 5×FAD mice and human AD brains. Integrative...

The perivascular glymphatic system promotes cerebrospinal fluid-interstitial fluid (CSF-ISF) interaction and macromolecular waste clearance and is an important determinant of brain homeostasis, the performance of which deteriorates with age. Astrocyte biology, vascular integrity, and age-associated cerebrovascular dynamic alterations interfere with the polarization of aquaporin-4 (AQP4) water channels on astrocytic endfeet, decreasing the clearance of aggregation-prone proteins, such as...