Her Discussions by Dr Faye Buy or Bye Bye with a Food Expert | Mini Episode
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Mar 19, 2026 
Professor Sarah Berry, UK nutrition researcher and Chief Scientist at ZOE, explains metabolism and dietary impacts. She unpacks glucose spikes and the truth about seed oils. Short takes cover protein needs, B12 for vegans, artificial sweeteners, processed foods, red meat limits, and when low-carb helps. Quick, punchy health takeaways without the jargon.
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Skip Unnecessary Protein Supplements
- Avoid routine protein supplements because most people already get sufficient protein from whole foods.
- Sarah Berry says only a few groups (some elderly or people with specific conditions) might need supplementation, so save money and focus on dietary sources.
Take B12 If You Follow A Plant Based Diet
- Avoid routine B12 supplementation only if you eat animal products; take B12 if you're vegan or vegetarian.
- Sarah Berry clarifies nuance: most people don't need extra B12 but specific diets require supplementation.
Sweeteners Differ In Metabolic Impact
- Artificial sweeteners may disrupt the gut microbiome and increase insulin resistance risk according to emerging evidence.
- Sarah Berry warns harms vary by sweetener: steviol has little evidence of harm, while sucralose and aspartame raise concerns.