EconTalk · Russ Roberts

Eating with Intelligence (with Julia Belluz)

September 29, 2025·1 hr 6 min·5 clips

Kevin Hall discovered that The Biggest Loser contestants who lost the most weight had the slowest metabolisms.

Host Russ Roberts interviews journalist Julia Belluz about her book 'Food Intelligence,' co-authored with Kevin Hall. They explore metabolism insights from The Biggest Loser study, the debate between low-carb and low-fat diets, the impact of ultra-processed foods, and the role of food environment versus personal responsibility in obesity.

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