Years ago we were told saturated fat and cholesterol were bad for us, but after years of low-fat diets, the incidences of heart disease and diabetes shot up. During this time, we were advised to replace saturated fats like butter with vegetable oils and margarine containing high amounts of largely pro-inflammatory Omega-6 fats. While the studies that these recommendations were based upon have long been disproved, we are left with a Standard American Diet with an imbalance in healthy fats. Learn what fats are essential to your diet and in what ratios as well as fats that you should avoid.