““Based on this data, Trichopoulou published a landmark article in the New England Journal of Medicine (NEJM) in 2003, in which she concluded that adhering to a “traditional Mediterranean diet,” which includes “a high intake of olive oil” was associated with a “significant and substantial reduction in overall mortality.” It is therefore a shock to find out that in this study, Trichopoulou never actually measured the olive oil consumption of her subjects. It was not an item on the food-frequency questionnaire she used, either as a foodstuff eaten directly or as a fat used in cooking. Instead, she “estimated” its use from the questionnaire’s list of cooked dishes, making assumptions about how Greeks might cook them.XVII This shortcoming is not mentioned in the NEJM paper, however, and “olive oil” is listed in the paper without any explanation of its derivation.XVIII””