[NYT] Healthy molars, healthy mind.In case oral hygiene wasn’t important enough already, brushing one’s teeth could help maintain one’s mental — along with their dental — health.
A recent study found a correlation between gum disease and dementia and other brain diseases, the Daily Mail reported. Prior studies had found that bacteria-causing gingivitis can metastasize from the mouth to the brain.
"This is the first study showing an association between the imbalanced bacterial community found under the gumline and a cerebrospinal fluid biomarker of Alzheimer’s disease in cognitively normal older adults," explained Dr. Angela Kamer of the NYU Dentistry School. She authored the brainy study published in Alzheimer’s & Dementia: Diagnosis, Assessment & Disease Monitoring.
Previous studies had established a link between a buildup of amyloid proteins in the cerebral arteries and cognitive decline. However, researchers had yet to pinpoint how that amyloid buildup causes the disease, which they now theorize could occur when gum disease prevents the body from jettisoning these interloping enzymes from the brain.
Researchers attempted to prove the dental-mental wellness connection by taking both gum swabs and cerebrospinal fluid samples from 48 healthy volunteers over 65 years old. People in this age group face a high risk of both dementia and gum disease — a cautionary tale for notoriously dentist-averse millennials.
They then measured their amounts of good and bad oral flora and found that individuals with more beneficial mouth microbes had lower levels of amyloids. In turn, these individuals had a lesser chance of contracting dementia.