Millions of bacteria live in your mouth. When the harmful ones grow unchecked, they don't stay there. They enter the bloodstream and travel. Scroll to trace where they go, and what we watch for.
Scroll to trace
Connection 01 of 10
Brain
Cognition & memory
The connection
A growing body of research links chronic gum inflammation to long-term brain and cognitive health.
Why oral health matters
Periodontal bacteria have been detected in studies of brain tissue, and ongoing oral inflammation may add to the body’s overall inflammatory burden.
How we evaluate it
We identify and address active oral infection early, helping reduce that chronic inflammatory load over time.
Gum disease and the inflammation behind it have been associated with heart and blood-vessel health.
Why oral health matters
The same bacteria found in periodontal (gum) infections have been identified in arterial plaque, and chronic oral inflammation is linked in research to higher cardiovascular risk.
How we evaluate it
We screen for inflammatory bacteria with on-site microscope analysis and track your gum health as part of a fuller risk picture.
Of all the mouth–body links, this one has the strongest evidence that treating the mouth actually changes the outcome.
Why oral health matters
Oral bacteria can be inhaled into the lungs. For anyone whose swallowing or cough reflex is impaired, that is a real route to pneumonia.
How we evaluate it
For medically complex and dependent patients we treat oral hygiene as respiratory prevention, and make home care achievable for whoever is actually doing it.
Not a stock illustration. This is actual footage from our phase contrast microscope. Those drifting rods and threads are bacteria. The large pale ovals are cells from the mouth's lining. Press play and watch a living ecosystem that is normally invisible.
Phase contrast microscopy at BU Dental. Look closely toward the middle of the clip: an amoeba, a single-celled parasite, drifts through the field. Finding one changes the conversation about what is living in a mouth.
We do this at every comprehensive visit, on screen, with you, because seeing your own biology is more persuasive than any lecture about flossing.
You're the toothbrush. Sweep the bacteria up before they slip past into the bloodstream. It's the same gate this whole page is about. Watch for the golden amoeba; it's the one from our microscope footage, and it runs from you.
Dr. Uddaraju and Dr. Bautista break down the oral-systemic connection on our feed, with new posts most weeks. Every one is built on peer-reviewed clinical research, and each links to the paper it came from, so you can read the primary source yourself.
Educational information describing associations reported in scientific research. It is not a diagnosis, medical advice, or a promise of treatment outcomes. Always consult your physician about your medical care. Content pending clinical review by Dr. Uddaraju and Dr. Bautista.
How can we help?
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Nothing you type here is sent or stored. Answers come from this page. Educational information about associations reported in research, not a diagnosis or medical advice. For your own situation, ask us in person.