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Neurology

·February 15, 2025·5 min read

Brain Bleeds Double Dementia Risk

Researchers have found that intracranial hemorrhages, or "brain bleeds," double the risk of developing dementia later in life. While ischemic strokes caused by blood clots have long been linked to cognitive decline, this study shows that hemorrhages also significantly increase dementia risk. Using Medicare data from nearly 15,000 patients, scientists observed a two-fold increase in dementia diagnosis within about 5.6 years after a brain bleed.

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·February 6, 2025·6 min read

How CBD Modulates THC’s Impact on the Brain

Researchers have identified how CBD interacts with cannabinoid receptors to mitigate the negative effects of THC, the psychoactive component of cannabis. Unlike THC, which fully activates the receptor and causes side effects like memory loss and addiction, CBD acts as a modulator, fine-tuning receptor activity.

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·January 31, 2025·5 min read

Imaging Reveals Gut-Brain Connection in Alzheimer’s Disease

Scientists have used advanced X-ray phase-contrast tomography (XPCT) to uncover how gut health may influence Alzheimer’s disease. The study found structural changes in the gut of Alzheimer’s-affected mice, revealing abnormalities in intestinal cells, neurons, and mucus secretion.

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·January 30, 2025·5 min read

Oral Bacteria Linked to Stroke Risk

A new study finds that the bacteria Streptococcus anginosus is more abundant in the saliva and gut of people who have had a stroke and is associated with a higher risk of death and major cardiovascular events. Researchers compared 189 stroke patients with 55 non-stroke participants, finding that this bacterium increased stroke risk by 20%.

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·January 27, 2025·5 min read

REM Sleep Delays May Indicate Early Alzheimer’s

Delayed rapid eye movement (REM) sleep may be an early indicator of Alzheimer’s disease. Researchers found that participants with delayed REM sleep had higher levels of toxic proteins associated with Alzheimer’s and reduced levels of brain-derived neurotrophic factor (BDNF), which supports memory.

This shows the outline of a person and a brain.

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·January 23, 2025·7 min read

Long COVID Impairs Exercise Capacity and Cognition for Years

A study of nearly 1,000 people with post-COVID-19 syndrome (PCS) revealed that two-thirds still experienced significant symptoms, including reduced exercise capacity and cognitive performance, two years after infection. Persistent symptom clusters included fatigue, neurocognitive disturbances, and post-exertional malaise, with worse outcomes in individuals with obesity, lower education, or severe initial infections.

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·January 21, 2025·6 min read

Antibiotics and Other Drugs May Reduce Dementia Risk

A study analyzing data from over 130 million individuals found that antibiotics, antivirals, vaccines, and anti-inflammatory medications are associated with a reduced risk of dementia. This supports the idea that infections and inflammation contribute to dementia and highlights the potential of repurposing existing drugs for prevention or treatment.

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·January 18, 2025·7 min read

Processed Red Meat Linked to Higher Dementia Risk

A study of over 133,000 individuals found that consuming processed red meat daily increases dementia risk by up to 13%, while replacing it with alternatives like nuts, legumes, or fish may lower the risk by 20%. Higher processed meat intake was associated with accelerated cognitive aging and increased subjective cognitive decline (SCD).

Auditory Neuroscience Featured Neurology Neuroscience

·January 14, 2025·5 min read

Hearing Loss May Signal Increased Risk of Parkinson’s Disease

A new study has identified a potential link between hearing impairment and an increased risk of developing Parkinson’s disease. Researchers analyzed data from over 159,000 individuals, finding that every 10-decibel increase in hearing loss corresponded to a 57% higher risk of Parkinson’s.

Featured Neurology Neuroscience

·January 13, 2025·4 min read

Biodegradable Brain Electrodes Advance Neural Repair

Researchers have developed a flexible, biodegradable electrode capable of stimulating neural precursor cells (NPCs) in the brain, offering a safer and more precise alternative for neural repair. The electrode dissolves naturally after seven days, eliminating the need for surgical removal while promoting tissue regeneration.

This shows the outline of people and brains.

Featured Neurology Neuroscience

·January 13, 2025·6 min read

Almost Half of Americans Over 55 Face Dementia Risk

New research finds that the lifetime risk of dementia after age 55 in Americans is 42%, significantly higher than previous estimates. Women face a higher risk (48%) than men (35%) due to their longer life expectancy. Risk factors include genetic predisposition, hypertension, diabetes, obesity, and limited physical activity.

This shows an older woman doing a crossword.

Featured Neurology Neuroscience

·January 13, 2025·5 min read

Indoor Temperatures Affect Cognitive Function in Older Adults

A new study reveals that older adults experience the least attention difficulties when home temperatures remain between 68–75 ˚F (20–24 ˚C). Deviations beyond this range double the risk of attention lapses, highlighting how even current climate conditions may harm cognitive health.

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Neurology

Brain Bleeds Double Dementia Risk

How CBD Modulates THC’s Impact on the Brain

Imaging Reveals Gut-Brain Connection in Alzheimer’s Disease

Oral Bacteria Linked to Stroke Risk

REM Sleep Delays May Indicate Early Alzheimer’s

Long COVID Impairs Exercise Capacity and Cognition for Years

Antibiotics and Other Drugs May Reduce Dementia Risk

Processed Red Meat Linked to Higher Dementia Risk

Hearing Loss May Signal Increased Risk of Parkinson’s Disease

Biodegradable Brain Electrodes Advance Neural Repair

Almost Half of Americans Over 55 Face Dementia Risk

Indoor Temperatures Affect Cognitive Function in Older Adults

AI Chip Mimicking Brain’s Reflex Center Developed

Study Overturns Decades of External Axon Growth Theory

Study Shatters Assumptions About Brain Connectome Dynamics

Earliest Evidence of Right-Handedness Found

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