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microbiota

·April 14, 2025·5 min read

Gut Imbalances in Autism Linked to Brain and Behavior Changes

New research reveals that gut imbalances in children with autism may influence brain activity and behavior by disrupting the production of key neurotransmitters like serotonin. Scientists found that changes in gut-derived metabolites are linked to differences in brain structure and function in children with autism.

Autism Featured Neuroscience

·April 8, 2025·4 min read

Oral Bacteria May Help Detect Autism with 81% Accuracy

A new study has identified a strong link between oral microbiota and autism spectrum disorder (ASD), revealing 11 bacterial species with potential as biomarkers. By analyzing oral samples from children aged 3–6, researchers developed a prediction model that identifies autism with 81% accuracy.

Featured Neuroscience

·February 11, 2025·3 min read

Gut Microbiome Regulates Brain Signals Through the Vagus Nerve

New research provides direct evidence that the gut microbiome communicates with the brain through the vagus nerve. Using germ-free mice, scientists observed significantly reduced vagal nerve activity, which returned to normal after introducing gut bacteria.

Featured Neurology Neuroscience

·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.

Featured Neuroscience

·January 28, 2025·3 min read

Oral Microbiome May Influence Cognitive Decline and Brain Health

The microbial ecosystems in our mouths may impact cognitive function as we age, with pathogenic bacteria linked to cognitive decline. Researchers found that beneficial bacteria, such as Neisseria, are associated with improved memory and attention, while harmful bacteria like Porphyromonas correlate with mild cognitive impairment.

Featured Neurology Neuroscience

·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).

Featured Neuroscience

·January 4, 2025·4 min read

Mediterranean Diet Improves Memory via Gut Microbiome Changes

A new study reveals that the Mediterranean diet may enhance cognitive function by altering gut microbiota. Rats fed a Mediterranean-style diet showed distinct bacterial changes linked to better memory, cognitive flexibility, and working memory compared to those on a Western diet.

Featured Neurology Neuroscience

·December 20, 2024·8 min read

Chronic Gut Virus May Play a Role in Alzheimer’s Development

Researchers have linked chronic intestinal infections caused by cytomegalovirus (HCMV) to a unique subtype of Alzheimer’s disease. The virus may travel from the gut to the brain via the vagus nerve, altering immune responses and contributing to hallmark Alzheimer’s changes like amyloid plaques and tau tangles. While HCMV infection is common and typically harmless, this study found that it may cause chronic brain inflammation in certain individuals.

Featured Neuroscience Psychology

·December 12, 2024·8 min read

Gut Serotonin Plays Role in Depression and Mood

Serotonin in the gut epithelium plays a critical role in modulating mood and may provide a safer target for treating depression and anxiety. In animal studies, increasing gut serotonin improved mood symptoms without causing digestive issues, unlike systemic antidepressant treatments.

Featured Neuroscience

·December 3, 2024·5 min read

Gut Microbes May Have Powered Evolution of Larger Brains

A new study suggests that gut microbes played a key role in the evolution of larger brains in primates by influencing energy production and usage. Researchers implanted microbes from humans, squirrel monkeys (large-brained species), and macaques (small-brained species) into mice, observing that microbes from larger-brained primates enhanced energy production, while those from smaller-brained primates favored fat storage.

Featured Neuroscience

·December 2, 2024·6 min read

Personal Gut Environments Shape How We Digest, Absorb Food

Individual differences in gut physiology and environment play a major role in shaping our gut microbiome and how we process food. Using a smart capsule to measure pH, temperature, and pressure, researchers found significant variations in digestion time and gut conditions between people.

This shows chemical imaging of the microbiome.

Featured Neurology Neuroscience

·November 21, 2024·5 min read

Parkinson’s Medication Alters Microbiome, Induces Iron Deficiency

The Parkinson's drug entacapone disrupts the gut microbiome by inducing iron deficiency, favoring the growth of potentially harmful bacteria like E. coli. Using advanced molecular techniques, researchers identified that entacapone interferes with iron availability, a critical resource for many gut microbes.