Tucker: Why have we been for so many decades led to believe that seed oils are the heart healthy alternative to more natural fats like tallow butter or extra virgin olive oil? Tucker: The guys who invented seed oils thought they were doing a good thing, but unfortunately, you know, often it's really hard to figure out if something is not acutely toxic is chronically toxic. We'll skip the animal nonsense and talk about people. If you give people some saturated fats, not all saturated fats, it causes their cholesterol to go up, right? Cholesterol means these particles in your blood whose job is to convey fats and cholesterol around the body,. They're broadly known as APOB, but