"Fad diet." (As applied to any diet other than that published by the US Department of Agriculture.)


What they are really saying: "I trust the US Department of Agriculture to look out for my best interests. They have no conflicts of interest, right? I also think that any diet not published by the US Department of Agriculture is the the equivalent of the Grapefruit Diet."

"Any diet that singles out one nutrient for demonization is an unhealthy Fad Diet."

What they are really saying: "I've spent my entire life demonizing fat and especially arterycloggingsaturatedfat. Don't eat fat or it will make you fat, and forgawdsake make sure you don't eat that arterycloggingsaturatedfat or it will raise your cholesterol and you'll die of a heart attack!"