There might be some controversy. My personal opinion is without the amount of sugar people consume, fat(natural saturated fat/unsaturated fat with a good Omega 3: Omega 6 ratio) is healthy. At least the most obvious problem of American diet is hyper-processed food/additive sugar, and in general too much fast calories to me. The equation has too many variables and you can't just blame American people don't follow the saturated fat part of the guidelines.