The clearest window into your health and longevity is your mouth.
Breathing, sleep, the microbiome and chronic inflammation all meet in the mouth, yet most of medicine still treats it as a separate department. Oral Intelligence makes the case that it is one of the earliest and most readable signals of how the whole body is aging.
Your dental visit was built to answer one question.
Are there cavities? Almost everything else your mouth can reveal goes unrecorded.
This isn't negligence. Dental training, insurance reimbursement and the design of the standard appointment all point toward a single task: finding and repairing damaged teeth. Meanwhile, the research on what the mouth reveals about the heart4,9, the brain5, metabolism20 and sleep2 has moved far beyond what happens in the chair.
The distance between what the science now shows and what a routine visit actually measures is the subject of this book.
of US adults 30 and older have periodontitis. Among adults 65 and older, the figure is 59.8%.1
Eke et al., JADA 2018of an estimated 29.4 million American adults with obstructive sleep apnea are undiagnosed.2
Frost & Sullivan for the AASM, 2016bacterial species live in the mouth, a community with documented links to disease far from it.3
Dewhirst et al., J Bacteriol 2010Population estimates and observational associations, not individual risk estimates. See all evidence →
From the gumline to distant disease.
Ten oral organisms, ten conditions, and the published evidence connecting them. Select any organism or condition to see what has been found, and how strong the evidence is.
Select an organism or a condition.
Each line is a published finding, labeled by the strength of its evidence. Association is not causation; the label tells you what kind of evidence stands behind each line.
Porphyromonas gingivalis
A principal periodontal pathogen. It produces gingipains, protein-cutting enzymes, and an enzyme (PPAD) that citrullinates human proteins.
- Cardiovascular diseaseAssociation
DNA of P. gingivalis detected inside human atheromatous plaque.4
- Alzheimer's diseaseAssociation + animal
Gingipains found in Alzheimer's brain tissue, tracking with tau; oral infection in mice reached the brain.5
- Pancreatic cancerProspective
Oral carriage associated with higher later risk of pancreatic cancer.8
- Rheumatoid arthritisMechanistic
Its PPAD enzyme citrullinates human proteins, the targets of rheumatoid autoantibodies.10
Fusobacterium nucleatum
A common oral anaerobe that bridges other species in dental plaque. Its FadA adhesin binds E-cadherin on human cells.
Aggregatibacter actinomycetemcomitans
Associated with aggressive forms of periodontitis. It produces leukotoxin A, which damages white blood cells.
Tannerella forsythia
One of the 'red complex' bacteria most strongly associated with advanced periodontitis.
Treponema denticola
A spiral-shaped red-complex bacterium that moves through tissue and is associated with deep periodontal pockets.
Prevotella intermedia
An anaerobe associated with periodontitis and gum inflammation.
- Cardiovascular diseaseAssociation
DNA detected inside human atheromatous plaque.4
Streptococcus mutans
The principal bacterium of tooth decay. Some strains carry a collagen-binding protein (Cnm) that lets them attach to damaged blood vessels.
- Hemorrhagic strokeAssociation + animal
Cnm-positive strains linked to hemorrhagic stroke in patients and worsened brain bleeding in mice.16
Viridans group streptococci
Normal residents of the mouth that can enter the bloodstream during chewing, brushing or dental procedures.
- Infective endocarditisGuideline
A leading cause of infective endocarditis; the AHA advises antibiotic prophylaxis before some dental procedures in high-risk patients.17
Parvimonas micra
An oral anaerobe associated with periodontitis and increasingly found in colorectal tumors.
- Colorectal cancerAssociation + mechanistic
Enriched in colorectal tumors and shown to promote tumor growth in mice.18
Klebsiella (oral strains)
Can colonize the gut when the normal gut flora is disrupted, for example after antibiotics.
- Inflammatory bowel diseaseAnimal
Oral Klebsiella colonizing the gut triggered inflammatory immune responses in mice.19
Cardiovascular disease
Atherosclerosis and blood-vessel function.
- P. gingivalisAssociation
DNA of P. gingivalis detected inside human atheromatous plaque.4
- T. forsythiaAssociation
DNA detected inside human atheromatous plaque.4
- T. denticolaAssociation
DNA detected in about half of coronary plaque samples in one study.15
- P. intermediaAssociation
DNA detected inside human atheromatous plaque.4
Infective endocarditis
Infection of the heart's inner lining and valves.
- Viridans streptococciGuideline
A leading cause of infective endocarditis; the AHA advises antibiotic prophylaxis before some dental procedures in high-risk patients.17
Hemorrhagic stroke
Bleeding within the brain, including cerebral microbleeds.
- S. mutansAssociation + animal
Cnm-positive strains linked to hemorrhagic stroke in patients and worsened brain bleeding in mice.16
Alzheimer's disease
Progressive neurodegeneration with amyloid and tau pathology.
Esophageal cancer
Cancer of the esophagus, including adenocarcinoma.
- T. forsythiaProspective
Higher levels in oral samples associated with later risk of esophageal adenocarcinoma.13
Pancreatic cancer
Usually diagnosed late, when treatment options are limited.
Colorectal cancer
Cancer of the colon and rectum.
Inflammatory bowel disease
Chronic inflammation of the gut, including Crohn's disease.
- KlebsiellaAnimal
Oral Klebsiella colonizing the gut triggered inflammatory immune responses in mice.19
Rheumatoid arthritis
Autoimmune joint disease marked by antibodies to citrullinated proteins.
Adverse pregnancy outcomes
Including preterm birth and stillbirth.
- F. nucleatumCase report
One documented case traced an oral strain to a term stillbirth.12
From how the mouth works to what you should ask for.
The book builds its argument in six parts: why the mouth has been treated as separate from the body, how breathing and the oral microbiome connect it to everything else, what regeneration can and cannot repair, and how to put all of it to use at your next appointment.
The Inflection Point
Why dentistry has treated the mouth as separate from the body, what that has cost patients, and why the field is shifting from repairing teeth to restoring health.
The Breath
Nasal breathing and nitric oxide, the airway behind night-time grinding, and how the face, laid down in the pharyngeal arches before birth, is shaped after birth by breathing, tongue posture and swallowing.
The Oral Microbiome
An ecosystem, not an enemy. The oral organisms linked to disease elsewhere in the body, and how to rebuild a healthy community rather than sterilize it.
The Science of Peptides
What peptides are, how these signaling molecules differ from drugs, and an honest account of what the evidence does and doesn't support in the mouth.
What Can Be Healed
How each tissue in the mouth heals (surgical sites, gums, the jaw joint, bone and implants, nerves), plus the airway assessment most patients never receive.
What to Ask For
ORIGIN, a precision oral-systemic assessment; what treatment actually looks like; where dentistry fits in longevity medicine; and what to do at your next appointment.
ORIGIN™ reads the mouth as one system.
Six domains, assessed in sequence, combined into a single picture of systemic risk. The book conceptualizes it; the practice runs it.
Select a domain.
ORIGIN assesses each domain in sequence, because each finding changes how the next is read. Tap a number on the wheel or a domain below.
Microbiome
Salivary analysis of the bacterial community and the specific pathogens with documented systemic associations.
TMJ & function
The jaw joints, the bite and how the system moves under load.
Neuromuscular
The muscles of the head and neck, pain patterns and the signals driving them.
Imaging
Structural views of joints, bone and airway that the eye cannot see in the chair.
Airway
Breathing pattern, airway anatomy and sleep-disordered breathing risk.
Biomarkers
Inflammatory and stress markers, including salivary cortisol, that place the oral findings in the context of the whole person.
Michael P. Gulizio
Two decades rebuilding mouths in New York City, a former NYU program director who trained dentists from around the world, and an equal number of years asking what the mouth reveals about the rest of the body.
Read the biography →“Oral Intelligence does not compete with Outlive or Protocols. It completes them.”On where the book sits
ORIGIN™
The precision oral-systemic assessment the book describes.
How it works → The practiceCore Smiles
An advanced practice in NoMad, Manhattan, covering the full scope of dentistry since 2007.
coresmiles.com →A bioactive oral care line
Developed with bioactive ingredients to support the oral microbiome rather than strip it. Launching in early 2027.
Be the first to know.
Hear when Oral Intelligence is available, and receive early excerpts before launch. Nothing else.
Published by Keystone & Arch, New York.