The bacteria that cause gum disease (gingivitis) was found in the brains of 96% of people with Alzheimer’s disease and was associated with worse disease pathology.
Animal studies showed the bacteria play a role in more rapid disease progression and blocking the bacteria from entering the brain slowed the neurodegeneration.
In a podcast I recorded with Dr. Dale Bredesen he discussed the role of the bacteria P. gingivalis, herpes virus, and other infectious agents play in promoting Alzheimer’s disease.
Check out the short 1.5-minute FMF video clip where Dr. Bredesen discusses this: https://youtu.be/bGW5tvwvteg