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Researchers have discovered that problems with the brain’s waste-clearing system—the glymphatic system—may significantly raise the risk of developing dementia. In one of the largest studies to date, MRI data from 40,000 adults revealed that impaired cerebrospinal fluid (CSF) flow predicts dementia risk years before symptoms appear.​ 

A new study finds that older adults with gum disease are more likely to show signs of white matter damage in the brain — a change tied to memory decline, balance issues, and higher stroke risk. MRI scans revealed that participants with gum disease had significantly more white matter hyperintensities than those without, even after

Scientists have found that people with multiple sclerosis (MS) have a distinctly imbalanced oral microbiome—marked by a loss of beneficial bacteria and a rise in inflammation-linked microbes. Using advanced genetic and metabolic profiling, researchers revealed that saliva from MS patients also had lower levels of hypotaurine, a molecule that supports antioxidant defense and nerve health.​ 

A new computational tool developed by researchers has uncovered genetic evidence directly linking Alzheimer’s disease to the loss of memory-making neurons, helping to resolve a decades-long mystery in dementia research. The algorithm, called seismic, matches genetic data to individual cell types, outperforming previous methods and highlighting how specific brain cells—not just immune cells—are implicated in

A large randomized and blinded clinical trial has found no additional benefit of repeated ketamine infusions over standard inpatient care for treating major depression. The study compared ketamine with a psychoactive placebo and found no meaningful differences in objective or self-reported depression scores, cognition, or quality of life.​ 

New research reveals that hunger can flip female mice from nurturing to aggressive—but only during specific hormonal phases. Scientists discovered that neurons controlling appetite (AgRP neurons) interact with a brain region linked to parental care, the medial preoptic area (MPOA).​ 

A new study reveals that while the ketogenic diet can prevent weight gain, it may cause severe long-term metabolic problems. Researchers found that mice on a long-term keto diet developed fatty liver disease and impaired blood sugar regulation due to stressed pancreatic cells.​ 

A new study reveals that auditory hallucinations in schizophrenia may arise when the brain fails to recognize its own inner voice as self-generated. Normally, the brain predicts the sound of one’s inner speech and dampens auditory responses accordingly, but this prediction breaks down in people who hear voices.​ 

Scientists are asking the public to share their most vivid memories to uncover why some moments feel as fresh as the day they happened. The project blends cognitive neuroscience with literature, examining how vivid memories are experienced, evolve with age, and even differ across centuries.​ 

Touch can strengthen bonds and calm stress, but not all affection is sincere. A new study reveals that people with “dark triad” traits—narcissism, psychopathy, and Machiavellianism—often use physical touch to control or manipulate their romantic partners.​