The Proof · October 12, 2026 · 1h 55m

30 Years of Diet Trials: What a Stanford Scientist Is Most (and Least) Sure About | Dr Christopher Gardner

Simon Hill speaks with Stanford nutrition scientist Dr. Christopher Gardner about his three decades of diet trials. They discuss why the perfect study is impossible, the surprising value of null results, and the few things most diets agree on. Gardner shares insights from his keto-versus-Mediterranean trial and explains why he is now focusing on institutional food environments.

This summary was generated from show notes and public descriptions, not from a full transcript review. Details may contain inaccuracies.

Preview

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The Perfect Diet Trial Will Never Happen

Gardner argues that the definitive nutrition trial people keep waiting for is impossible to run because of the trade-offs between rigour and real-world applicability.

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The Value of a Null Result (the $1.4 Million Garlic Study)

Christopher Gardner describes a $1.4 million garlic study that found no effect, and why he considers it one of his proudest achievements.

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