New treatment swaps in healthy mouth bacteria to tackle bad breath at the source.

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4 min readUW News
New treatment swaps in healthy mouth bacteria to tackle bad breath at the source.
To rebalance the oral microbiome and cure chronic bad breath, researchers at the University of Washington are embarking on a first-of-its-kind experiment. Credit: iStock
From UW News

The human mouth is full of wonders. It’s home to hundreds of species of bacteria, fungi, viruses and protozoa, which work in delicate harmony to maintain our oral health. Sometimes, though, this complex system — known as the oral microbiome — can fall out of balance. Anaerobic bacteria build up on the tongue and in the little pockets between our teeth and gums. There, they break down organic matter and spew out a foul odor. This, the current theory goes, is what causes many chronic cases of bad breath, or halitosis.

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Briefing

Source
UW News
Published
June 12, 2026