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oral microbiome

·October 22, 2025·8 min read

Oral Bacteria May Drive Multiple Sclerosis

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.

Featured Neurology Neuroscience

·June 12, 2025·5 min read

Oral-Gut Bacteria Linked to Dementia Risk in Parkinson’s Disease

A new study has found that bacteria from the mouth may migrate to the gut and contribute to cognitive decline in people with Parkinson’s disease. Researchers identified harmful microbes and their toxins in the gut of Parkinson’s patients with dementia, suggesting a possible link between oral hygiene, gut health, and neurodegeneration.

Featured Neuroscience Psychology

·May 24, 2025·2 min read

Married Minds: Oral Microbiota May Mediate Shared Anxiety

A new study suggests that oral microbiota transmission between newlywed couples may influence the onset of depression and anxiety symptoms. Researchers observed that healthy spouses of partners with insomnia, depression, and anxiety developed similar mental health symptoms and microbiota profiles within six months of marriage.

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 Psychology

·January 13, 2023·4 min read

Cannabis and the Oral Microbiome: Exploring Their Impacts on the Brain

A new study seeks to better understand how cannabis use alters the oral microbiome and how this may have an impact on neurodegenerative disorders.

Featured Neuroscience Open Neuroscience Articles

·February 26, 2020·4 min read

Vaping alters oral bacteria, increasing infection risk

Vaping e-cigarettes modulates the oral microbiome and increases the abundance of pathobionts. The aerosols in vaping products alter the host response, prompting gum inflammation and making epithelial cells in the mouth susceptible to infection.

Autism Featured Genetics Neuroscience

·August 16, 2018·4 min read

Microbial Activity in the Mouth May Differentiate Children with ASD

Researchers report differences in oral microbial gene expression may distinguish children with ASD from their peers not on the spectrum. The study suggests GI microbiome disruptions, previously identified in children with ASD, may extend to the mouth and throat.