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Could cannabis use, oral bacteria and brain function be linked?

​Wei Jiang, a professor of Microbiology and Immunology at the Medical University of South Carolina (MUSC), has focused her research on discerning how cannabis smoking affects oral health and alters oral bacteria.

Speaking to EurekaAlert!, Wei said, “This will be the first study to investigate the cannabis-altered oral microbiome and its effects on the brain.”

Past clinical studies have noted that smoke contains compounds which affect oral health. The changes in bacteria these compounds create have been linked to cardiovascular diseases, preterm birth and Alzheimer’s disease. By allowing this bacteria to flourish, it can enter the bloodstream, subsequently damaging other organs, including the brain.

In 2021 Wei and her team released a study showing that frequent cannabis smoking alters the oral microbiome. In particular, the team found higher levels of the Actinomyces meyeri (A. meyeri) bacterium.

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