The Oral Microbiome — Why What's Living In Your Mouth Is Affecting Your Whole Body

takeaways

1. Dr Daniel Sutcliffe argues that the mouth and body are deeply connected, describing medicine and dentistry as historically 'divorced' with separate teaching, regulatory bodies and records that rarely communicate.

2. The conversation covered emerging research linking oral bacteria to wider health, including one study finding P. gingivalis DNA in 90% of Alzheimer's brains and a two-way relationship between gum disease and diabetes via mediators like IL-6 and TNF-alpha.

3. The oral microbiome was described as the 'front door' to the gut, with discussion of a finding that around 45% of gut bacteria may be fed from the mouth, and how diet, flossing, sleep and stress shape which bacteria thrive.

4. Wisdom teeth removal was discussed as a risk-benefit decision, including the risk of nerve damage — which the host experienced himself and recovered from after 3–4 months.

5. Snoring and sleep apnoea were explained as vibration of soft tissues and airway interruptions that strain the cardiovascular system, with treatment via a custom MAS device that is gradually adjusted.

6. Practical oral care topics were covered, including nose breathing and nitric oxide, mouth tape, fluoride versus hydroxyapatite toothpaste, amalgam filling removal, tongue scraping, water flossers and mouthwash.

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