The Research Library

The evidence behind Primary.

Every claim we make about the mouth-body connection is built on published science, government reports, and mainstream reporting. This is the library: curated, current, and linked directly to the source.

23
Papers & reports
9yrs
Spanned
28
Conditions linked
6
Source types
Source typePeer-reviewedGovernment & health agencyWhitepaperPatient educationMainstream pressClinician blog
20251 entry
20244 entries
Mainstream pressMar 2024

Why Isn't Dental Health Considered Primary Medical Care?

Lola Butcher · Knowable Magazine (Annual Reviews)

Investigative long-read on the historical separation of dentistry from medicine. Profiles integration models: embedded hygienists in medical clinics, combined dental-medical practices, coalitions pushing to "put the mouth back in the body."

Read the article
Whitepaper2024

The Connection Between Poor Oral Health and Chronic Disease

National Assoc. of Chronic Disease Directors · NACDD / CDC whitepaper

Public-health framing of oral health as an under-recognized driver of diabetes and cardiovascular outcomes. Urges bidirectional referrals: dental providers screening for diabetes and hypertension, medical providers flagging oral disease.

Read the report
Patient educationUpdated Mar 2024

Oral Health: A Window to Your Overall Health

Mayo Clinic Staff · Mayo Clinic (Patient Education)

Authoritative patient-facing overview. Oral bacteria and inflammation are linked to heart disease, stroke, premature birth, low birth weight, pneumonia, and worsened diabetes control.

Read the overview
20234 entries
Clinician blog2023

Clean Mouth, Clean Brain

Mark Hyman, MD · drhyman.com

Functional-medicine framing of the oral microbiome's role in brain health, connecting P. gingivalis to Alzheimer's pathology, and oral-gut microbial crosstalk to rheumatoid arthritis and chronic inflammation.

Read the post
20222 entries
20214 entries
Government & health agencyDec 2021

Oral Health in America: Advances and Challenges

U.S. Dept. of Health & Human Services (NIDCR) · NIH (Surgeon General-style report)

Landmark 20-year update to the 2000 Surgeon General report. Calls for "integrated oral, medical, and behavioral health care" as national policy: the most authoritative federal endorsement of the oral-systemic model.

Read the report
Mainstream pressOct 2021

Gum disease linked to Alzheimer's disease

Shervin Molayem · Nature Outlook: Oral Health

Porphyromonas gingivalis, the keystone gum disease bacterium, and its gingipain toxins detected in Alzheimer brain tissue. Suggests chronic oral infection as a modifiable risk factor for neurodegeneration.

Read the report
WhitepaperJan 2021

Innovations in Oral Health and Primary Care Integration

Primary Care Collaborative (PCC) · PCC Report

Documents successful medical-dental integration programs: prenatal oral health initiatives, geriatric oral care in nursing facilities, co-located dentists in primary clinics. Aligns oral health with patient-centered medical home principles.

Read the report
20203 entries
Peer-reviewedFeb 2020

Periodontitis and cardiovascular diseases: Consensus report

Sanz M, Marco del Castillo A, Jepsen S, et al. · J. Clinical Periodontology (EFP / World Heart Federation)

Joint workshop of the European Federation of Periodontology and the World Heart Federation. Confirms an independent association between severe periodontitis and CVD, a paradigmatic medical-dental collaboration statement.

Read the consensus
20191 entry
Clinician blogDec 2019

Clean Mouth, Clean Brain (original)

Mark Hyman, MD · drhyman.com

Early functional-medicine summary citing research that P. gingivalis gingipains can travel to the brain and release neuron-damaging toxins implicated in Alzheimer's, reframing oral hygiene as brain hygiene.

Read the post
20171 entry
Context3 entries

This library is updated as new evidence lands. If you're a clinician or researcher and want a paper added to the review, write us. We'd rather our science keep growing than settle.