The dentist you choose can shape your health. This is Part 2 of 8. Today we focus on your brain.
Think back to the two people I described last week: same age, similar genes, similar diets—one who chose a whole‑body dentist and one who opted for a traditional drill‑and‑fill approach. That single choice can have consequences that reach far beyond the mouth.
Last week we followed how that decision affected their heart health over a lifetime. Today I want to follow the same two patients to a place that worries most of us even more: the brain. I take this topic personally—my mother had Alzheimer’s and my father had ALS with dementia—so when research began linking gum disease to brain illness, I read it as both a dentist and a son.
In 2019, a Science Advances study identified Porphyromonas gingivalis—the bacterium most associated with periodontitis—in the brains of people who had Alzheimer’s. The researchers described a pathway by which oral bacteria can migrate to the brain and contribute to neurodegeneration. That finding shifted the conversation from correlation to a plausible mechanism connecting oral infection and brain disease.
A reasonable counterpoint is that people who develop dementia may stop brushing and flossing, allowing bacteria to accumulate after cognitive decline begins. The evidence, however, has repeatedly pointed the other way. In the same line of work, toxic enzymes produced by P. gingivalis—called gingipains—have been found in brain tissue before clinical diagnosis and track with the areas of damage. Animal studies add further weight: healthy mice exposed to P. gingivalis developed brain changes similar to those seen in human neurodegeneration. Taken together, these findings suggest oral bacteria may play a role in initiating or accelerating brain disease.
What does that mean for our two patients? Gum disease is often slow, painless, and easy to ignore; many people carry untreated inflammation for years without obvious symptoms. A dentist focused only on cavities may be satisfied as long as the teeth look intact. A whole‑body dentist, by contrast, looks for signs of gum inflammation early and treats them as meaningful because the mouth and the rest of the body are connected. For someone with a family history of Alzheimer’s, that attention matters.
If Alzheimer’s or other neurodegenerative disease runs in your family, treat your gums as part of your brain health plan. Don’t wait until you see bleeding. At your next dental visit, ask plainly whether you have gum inflammation and insist on a clear assessment and follow‑up plan if you do. Early detection and consistent care are among the few modifiable factors in the Alzheimer’s conversation you can act on today.
Practical steps that support gum and brain health include: consistent twice‑daily brushing with an appropriate toothpaste, daily interdental cleaning (floss or interdental brushes), tongue cleaning, and professional periodontal evaluation when inflammation is present. Reducing systemic inflammation through diet, sleep, stress management, and regular medical care also helps—oral health does not exist in isolation.
The takeaway: the dentist you choose can influence more than your smile. Attention to gum inflammation and early treatment of periodontal disease may reduce a source of chronic inflammation that reaches the brain. Healthy gums are a tangible, actionable factor you can address tonight to protect long‑term brain health.
A different dentist can mean a different destiny.
Next week: we’ll explore the two‑way relationship between your gums and blood sugar—and the key question your dentist should be asking but probably isn’t.
-Dr. B
P.S. Many readers ask what I use in my own oral care routine. Here are the items I use regularly (listed without links):
- An oil‑based rinse used in place of conventional mouthwash, twice a day
- A hydroxyapatite toothpaste for brushing twice a day
- A tongue scraper used once daily
- Daily green tea for its anti‑inflammatory and cavity‑preventive properties
- Magnesium supplement (500 mg), taken 1–2 hours before bedtime