Sydney Holistic Dental Centre, founded 1983 · FACNEM · FASLM · Past President ACNEM · Two US health-foundation boards

The mouth is the missing piece
in chronic disease.

Forty-three years of clinical practice — a podcast, a coaching practice, and a library — independent of the supplement, lab, and pharmaceutical industries.

The chart

The chart that started this practice.

Estimated global cases of selected non-communicable diseases, 2022. Source: WHO Global Oral Health Status Report 2022.

Estimated global cases of selected non-communicable diseases, 2022. Oral diseases 3,474 million; mental disorders 967 million; cardiovascular diseases 532 million; diabetes 458 million; chronic respiratory diseases 453 million; cancers (excluding lip and oral cavity) 86 million. 3,474M Oral diseases 967M Mental disorders 532M Cardiovascular 458M Diabetes 453M Chronic respiratory 86M Cancers Cancer figure excludes lip & oral-cavity cancers, which would compound the oral-disease total. Spheres scaled by √count.
WHO Global Oral Health Status Report, 2022. Comparison figures from WHO NCD Country Profiles, IHME GBD 2019 (updated 2022), IDF Diabetes Atlas 10th ed., and Globocan 2020.
Oral diseases
3,474M
Mental disorders
967M
Cardiovascular
532M
Diabetes
458M
Chronic respiratory
453M
Cancers
86M
"Oral diseases affect 3.5 billion people. Nothing else on the chart is in the same order of magnitude. The mouth is connected to almost every chronic disease. Mainstream medicine has not caught up." Dr Ron Ehrlich, A Life Less Stressed (Scribe, 2018).

The Brief

The Mouth Is the Missing Piece.

A 5,000-word clinical brief on the oral–systemic axis: periodontal disease and cardiovascular outcomes, the inflammation pathways the rest of medicine treats in isolation, and what to ask your dentist and your GP. Written for the reader, fully cited. Free.

Thank you. The Brief is on its way. We'll send The Mouth Is the Missing Piece to your inbox within a business day. One email a month thereafter — never sold, never shared, never spam.

A PDF and a long-form web reader. Read in roughly forty minutes.
One email a month. Never sold, never shared, never spam.

The Library

Six hundred episodes.
Twenty-seven topics.
Indexed for reading.

Not for the algorithm. The corpus is the moat — browse by what Ron has actually thought about, not by recency.

Oral & systemic81 ep

The wedge.

Periodontal disease and cardiovascular outcomes; the oral microbiome; what your dentist and your GP each see and miss.

"Oral microbiome under the microscope" — with a senior hygienist

  1. #594Oral microbiome under the microscope — with a senior hygienist1:22
  2. #581Periodontal disease and atrial fibrillation — Dr Ross Walker0:58
  3. #572What 15 medical specialists left out of the chart — Jalal Khan, BDS1:14

Mental fitness47 ep

Saboteurs and sage.

The PQ work, the seven-week protocol, the clinical case for treating mental fitness as primary, not secondary.

"Why the practitioner crashed before the patient did"

  1. #588Why the practitioner crashed before the patient did1:08
  2. #561Leading under pressure — Dr Amar Dhall1:04
  3. #544Nine saboteurs and what to do with them0:51

Sleep38 ep

Why insomnia is rarely about sleep.

The pillar that anchors the others. Circadian biology, sleep apnoea, why the bedroom is the wrong place to look first.

"Circadian harmony for the shift worker"

  1. #590Circadian harmony for the shift worker0:54
  2. #574Sleep apnoea hidden in plain sight — Dr Mike Dilkes1:11
  3. #563The mouth, the airway, and the night0:48

Nutrition & environment64 ep

Four decades of practice.

What we got wrong about saturated fat. What we are getting wrong about Ozempic. The endocrine story the food system isn't telling.

"From food critic to regenerative farmer — Matthew Evans"

  1. #587From food critic to regenerative farmer — Matthew Evans1:18
  2. #570The Ozempic accident waiting to happen0:42
  3. #552What we got wrong about saturated fat1:02

Practitioner health22 ep

A bias of the production.

When the clinician's own crash predicts the patient's. The practitioner-conversion thesis: epiphanies that change downstream care.

"The dental hygienist who reframed forty years of practice"

  1. #592The dental hygienist who reframed forty years of practice1:31
  2. #578When the GP burns out — Dr Carole Hungerford1:06
  3. #549Why integrative practice is harder, and worth it0:57

Lessons from the pandemic31 ep

A live, sceptical record.

What science learned and what it had to unlearn. The institutional incentives that survived the data. Read against the current consensus.

"COVID, immunity, and the truth we missed — Prof Robert Clancy"

  1. #583COVID, immunity, and the truth we missed — Prof Robert Clancy1:16
  2. #558What the pandemic told us about chronic disease0:53
  3. #530Five years on — what changed, what didn't1:09

Regenerative agriculture28 ep

Soil, gut, the same conversation.

The food system upstream of the chronic-disease curve. Soil microbiome, mineral density, why farms and bodies are read together.

"Why soil microbiome maps the gut"

  1. #591Why soil microbiome maps the gut0:59
  2. #566Mineral density and the modern carrot0:46
  3. #540Regenerative farming as public health policy1:04

Children's health19 ep

Decisions made before twelve.

Sleep, breath, and what dentists see first. The interventions whose returns compound across a lifetime.

"Mouth-breathing and craniofacial development"

  1. #585Mouth-breathing and craniofacial development0:50
  2. #564Children's sleep — the consultation that doesn't get had0:55
  3. #542Diet in the first decade — Sophie Ehrlich1:07

Politics & health24 ep

Why good health doesn't make dollars.

The structure of the system you are inside of. For-profit medicine, prevention's negative ROI for industry, and the institutional incentives that follow.

"Five-sixty for prevention — and why nobody buys it"

  1. #576Five-sixty for prevention — and why nobody buys it1:12
  2. #557Twenty per cent of GDP — the American case0:48
  3. #535When the regulator is the customer1:01

Eighteen further verticals — men's health, women's health, public health, dementia, mitochondrial function, urban agriculture, longevity, and more. Each with its own bias of the production.

Browse all 27 topics →

How a year is structured

Three rungs.
Each gives more than it takes.

01 — A Brief, free.

A 5,000-word clinical document.

Forty minutes of reading. The oral–systemic axis with citations. Sent in exchange for an email address.

02 — A consultation, paid.

Sixty minutes with Dr Ron, $395.

A structured pre-call assessment, a recorded video consultation, and a written follow-up of three to five pages within a week.

See the consultation page →

03 — The programme, premium.

Ten weeks of personal coaching.

The five-stressor assessment delivered fully, the five-pillar protocol mapped to your case. From $4,800. By application after consultation.

For practitioners

A peer body around an oral–systemic clinic.

A monthly clinical-update call on the oral–systemic literature. The Mastering Oral Health course (5 modules, ten hours, CME-equivalent where applicable). Access to the Advisory Panel.

For Australian integrative GPs, allied health, and dentists working outside the conventional model.

$1,200 / year. By application.

Apply to the Practitioner Programme
Advisory Panel Dr Carole Hungerford
Dr Ross Walker
Prof Robert Clancy
Dr Mike Dilkes
Dr Amar Dhall
Jalal Khan, BDS
Matthew Evans
+ eight further practitioners

Independence

What this practice is not.

Not a supplement business. There is no shop on this site. There never has been.

Not a lab partnership. Recommendations are made on clinical judgement, not on the basis of laboratory affiliations.

Not a concierge clinic. The price points are published. A reader can decide what to spend, today, before they speak to anyone.

— Reviewers on Apple Podcasts have written that this practice is "independent of the influences of the chemical, food or pharmaceutical industries." We have not edited the phrase because no edit is warranted.

Unstress Health Membership

A working library, at the price of a coffee a week.

$29 /month · or $290 / year

The members' library — the Mastering Oral Health course, monthly Advisory Panel readings, the seven-week Mental Fitness protocol, and a published change-log of what is added each month.

Join the Membership →

Membership replaces the previous $10/month structure (audit §B.7). The price moves because the content earns it.

Dr Ron Ehrlich

A clinician, an author, a podcaster.

Founded the Sydney Holistic Dental Centre in 1983. Forty-three years in private practice. Six hundred episodes of Unstress. A book published by Scribe in 2018, a second forthcoming. Past President of the Australasian College of Nutritional and Environmental Medicine. Co-founder of Nourishing Australia. Serving on two US health-foundation boards. Fellowships in Nutritional & Environmental Medicine and in Lifestyle Medicine.

Endorsed by Dr Carole Hungerford (integrative medicine), Dr Ross Walker (cardiology), and Deborah Hutton.

About Dr Ron →

The book pipeline

A Life Less Stressed.
Mastering Oral Health.
Two more in draft.

Forthcoming, late 2026

Mastering Oral Health

Derived from the five-module clinical course. The oral microbiome, periodontal disease and systemic outcomes, the questions to ask your dentist and your GP.

Pre-order →
Read a sample chapter →

Two further in draft

The Practitioner Conversion · The Cost of the System

One on practitioner epiphany and downstream care. One on the structure of the for-profit health economy. Working titles. Drafting in the open.

Hear when each ships →

The podcast

Unstress with Dr Ron Ehrlich.

Six hundred episodes since 2013. One and a half million downloads. A long-form conversation with the people who hold up to scrutiny — clinicians, scientists, farmers, sceptics.