Butter is back on America’s tables — but is it quietly taking years off our lives? In this episode, we dig into the science and controversy behind the nation’s renewed love affair with saturated fats. A massive 30-year study suggests higher butter consumption may raise the risk of death, especially from cancer — yet experts warn the story isn’t that simple. From the chemistry of fats to the confounding habits that muddy nutritional research, we unpack what the evidence really says. And we ask the big question: should we be swapping butter for olive oil, or is this just another chapter in nutrition’s never-ending whiplash?

https://www.economist.com/science-and-technology/2025/03/07/is-butter-bad-for-you