05/04/2026
The bacteria behind gum disease don’t stay where they start.
Researchers have found Porphyromonas gingivalis, the main bacteria in gum disease, in places it was never meant to be:
In the brains of Alzheimer’s patients, where its toxins are linked to the protein damage that drives memory loss.
In atherosclerotic plaque in coronary and carotid arteries, and in the tissue of patients who have suffered heart attacks.
In the gut, where it survives stomach acid, disrupts the microbiome, and weakens the intestinal barrier.
In the placenta and umbilical cord of women who delivered prematurely, where it triggers the inflammatory cascade associated with preterm birth.
Periodontal disease affects nearly half of American adults over 30. It isn’t just a dental problem, it’s a whole-body inflammatory condition that happens to start in your gums.
Your mouth is not separate from the rest of your body. It never was.
• Dominy et al., Science Advances (2019)
• Mahendra et al., J Indian Soc Periodontol (2013)
• Olsen & Yamazaki, J Oral Microbiology (2019)
• Vanterpool et al., PLOS One (2016)
• Eke et al., J Dental Research (2012)
