How to Improve Oral Health & Its Critical Role in Brain & Body Health

Andrew Huberman explains oral health as a foundational element of overall brain and body function, expanding it beyond teeth and breath to include the microbiome, gums, palate, and tonsils. He proposes adding oral and gut health as a seventh pillar alongside sleep, sunlight, nutrition, exercise, stress management, and social connections, citing links to cardiovascular, metabolic, and neurological health. Drawing from consultations with dentists, periodontists, and researchers, he outlines biology, risks, and protocols emphasizing remineralization to repair early cavities.

Tooth Structure and Remineralization Process

Teeth consist of translucent enamel over dentin; cavities form as bacteria like Streptococcus mutans (acquired through kissing or sharing utensils, not innate) consume sugars or carbs, producing acid that shifts the mouth from remineralization (rebuilding mineral crystals via saliva's hydroxyapatite) to demineralization (eroding enamel). Early enamel cavities can self-repair if the mouth stays alkaline longer than acidic, as saliva minerals form strong lattice bonds during daytime peaks of production. Nighttime saliva drops sharply, heightening decay risk without intervention. Gums seal teeth from bacteria invasion; recession allows pathogens into bone and bloodstream, linking to periodontitis, heart disease, and Alzheimer's via blood-brain barrier crossing.