Most replayed moment: The things hiding in your food? | Professor Marion Nestle
Aug 18, 2026 · 14m
Summary
Food policy expert Professor Marion Nestle joins Zoe Science & Nutrition to discuss the safety and regulation of food additives. She explains the US "GRAS" system, where companies largely self-regulate safety, contrasting it with Europe’s precautionary approach. The episode highlights concerns over artificial colorings and the lack of rigorous testing for thousands of unproven ingredients in ultra-processed foods.
Topics discussed
Introduction to food additives and ultra-processed foods
History of FDA regulation and the GRAS standard
Self-regulation: Companies assessing their own additives
Challenges in conducting rigorous nutrition research
US vs Europe: Precautionary principle and color additives
Revoking GRAS status: The case of trans fats
Color additives and potential links to child hyperactivity
Cosmetic nature of color additives and industry pledges
Cumulative effects of thousands of untested chemicals
Prioritizing real food and improving school meals
Sponsor segment: Zoe Daily 30 gut supplement
Listen ad-free on Castria