Why you can't stop eating: The science of cravings, food addiction and 5 ways to regain control | Michael Pollan & Prof Tim Spector

What happened in this episode?

On this episode of Zoe Science and Nutrition, host Jonathan Wolf is joined by acclaimed food writer Michael Pollan and epidemiologist Professor Tim Spector for an investigation into how industrial agriculture and food corporations have broken humanity's ancient relationship with plants. Pollan traces the ultra-processed food crisis to a 1970s Nixon-era agricultural policy that incentivized corn and soy monocultures, creating massive surplus that could only be consumed through industrial refinement into ingredients like high fructose corn syrup and maltodextrin. He reveals that most ultra-processed food ingredients derive from just two crops, and that carbon isotope analysis of American hair shows bodies are now majority corn. The conversation exposes how government subsidies make unhealthy food artificially cheap while whole foods receive no support, and alleges food companies learned from Big Tobacco to destroy internal documents proving intentional consumer manipulation. Pollan and Spector detail how ultra-processed foods are engineered for 'cravability' through precise combinations of sugar, fat, and salt that trigger dopamine responses and override satiety signals. They discuss caffeine as the world's most widely used psychoactive drug, with Spector citing evidence that coffee consumption up to 6 cups daily reduces heart disease risk by 25-30 percent. The episode pivots to solutions, emphasizing cooking as a cornerstone habit, plant diversity targeting 30 different plants weekly, and cultural eating practices like the French question 'are you satisfied?' versus the American 'are you full?' Pollan updates his famous food philosophy to 'eat food, not too much, mostly plants' by adding fermented foods and emphasizing that traditional cultural diets contain accumulated wisdom that modern nutritional science is only beginning to understand.

What are the key points?

• Pollan claims food companies are destroying internal documents proving consumer manipulation, learning from Big Tobacco's legal mistakes in the 1970s-80s.
• Carbon isotope analysis of American hair reveals bodies are majority corn due to processed food dominance, according to Pollan.
• Government subsidies for corn and soy monocultures make ultra-processed food artificially cheap while whole foods receive no support, both guests confirm.
• Spector cites epidemiological data showing coffee consumption up to 6 cups daily reduces heart disease risk by 25 to 30 percent.
• Ultra-processed foods are engineered for 'cravability' through precise sugar-fat-salt combinations that trigger dopamine and override satiety signals.
• The ultra-processed food epidemic originated from Nixon-era policy encouraging corn monocultures to lower food prices, not consumer demand for convenience.
• Pollan recommends incremental cooking increases, aiming for 30 diverse plants weekly, and adopting cultural eating practices like asking 'are you satisfied?' not 'are you full?'

Which topics are covered?

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ZOE Science & Nutrition

Published

28 May 2026

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