On the surface, this is a story about food and obesity. Underneath, though, it’s a much deeper story — about science, economics, prejudice and how humans arrive at their version of truth. It’s complicated and messy, but the lessons are applicable across the board — including in politics.
Over the last 50 years, it’s become medical wisdom that eating fat is a very bad thing. It causes obesity. It clogs arteries. It causes all sorts of problems. But what if there’s no proof of that? What if every study ever attempted to prove it had done the opposite or been inconclusive? Science writer Gary Taubes says that’s the case.
Taubes researched the history of the recommendations against fat and the various efforts to prove that approach is the right one. He also looked at the competing theory about obesity, heart disease and other health problems — that they’re caused by sugar. His evidence will leave you wondering why you ever worried so much about fat.
His book is called “Good Calories, Bad Calories: Fats, Carbs, and the Controversial Science of Diet and Health,” but you don’t have to read the book to be fascinated by its insights, both about nutrition and about how science determines what’s true and what’s not. (If you’re honest, it might make you wonder how honest you can really be with yourself.) On this week’s episode of EconTalk, economist Russ Roberts interviews Taubes. Click “play” to listen.
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