Butter vs. Oil: The Science of Saturated Fat and Longevity

Butter has long occupied a complicated place in our diets—praised by some as a wholesome traditional food and criticized by others as a source of unhealthy saturated fat. As nutritional advice continues to evolve, the debate over what belongs on our plates has become more confusing than ever. In this episode, we explore the latest research on butter, plant-based oils, and long-term health, tracing why scientists are reexamining the relationship between dietary fats and the risk of chronic disease. From cholesterol and liver health to the strengths and limitations of large observational studies, we examine what the evidence can—and cannot—tell us about the foods we eat every day. The story reveals a broader lesson about nutrition science, where simple answers are rare, but small, evidence-based choices may have profound consequences for health and longevity.https://www.economist.com/science-and-technology/2025/03/07/is-butter-bad-for-you