Seed oils (canola, soybean, corn, sunflower) are high in polyunsaturated fats — chemically unstable and prone to oxidation, especially under heat. Saturated fats (butter, tallow, coconut oil) are more stable and don't break down into the same oxidative byproducts when cooked. Stability matters as much as the nutrition label. → Swap one seed oil in your kitchen for butter or tallow this week.