Eat Your Heart Out

Over the last several decades, it has become accepted wisdom that consuming saturated fat, the type found in meat and butter, is bad for you. Starting in the 1960s, studies showed convincingly that saturated fat raises cholesterol levels and that these elevated levels, especially of low-density lipoprotein cholesterol, or LDL (the so-called bad cholesterol), increase heart disease. Studies also showed that consuming polyunsaturated fats — safflower, corn and soybean oils — reduced people’s levels of overall cholesterol and LDL and should be encouraged.

But new studies may be upending those assumptions

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