The new 2025 dietary guidelines flipped conventional wisdom by ending "the war on saturated fat." After 40+ years of telling Americans to choose low-fat products, the government quietly admitted they got it wrong. But here's what they're not saying: the low-fat processed foods that replaced real butter, whole milk, and fatty meat didn't just fail to make us healthier—they made us catastrophically worse. When you remove fat from food, you have to replace it with something. That something is usually sugar. And that's where the real story begins.