The Diary Of A CEO with Steven Bartlett Most Replayed Moment: Don’t Brush Your Teeth After Sugar! The Best Oral Care Routine
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Nov 7, 2025 
Dr. Victoria Sampson, an integrative dentist and founder of The Health Society clinic, shares insights on the oral microbiome's impact on systemic health. She reveals how oral bacteria, like Fusobacterium, can influence cancer risk. Victoria emphasizes the importance of brushing timing and dietary habits, cautioning against brushing immediately after consuming acidic or sugary foods. She also provides practical tips like using electric toothbrushes, leveraging green tea for its antibacterial properties, and the benefits of oral probiotics for maintaining a healthy mouth.
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Oral Bacteria Linked To Cancer Risk
- Fusobacterium nucleatum in the mouth links to faster tumour growth and is found in colorectal and breast cancer samples.
- An antibiotic targeting that bacteria could prove a causal link if it slows cancer progression.
Use Green Tea To Reduce Harmful Bacteria
- Drink green tea because it is antibacterial, anti-inflammatory, and effective at killing Fusobacterium nucleatum.
- Use simple dietary choices like green tea to actively shift your oral microbiome toward health.
Avoid Grazing On Sugar; Wait To Brush
- Avoid sipping sugary drinks slowly; take a single 'sugar attack' rather than continuous snacking.
- Wait 30 minutes before brushing after acidic or sugary foods to avoid grinding acid into enamel.