"Most nutritional science involves studying one nutrient at a time, a seemingly unavoidable approach that even nutritionists who do it will tell you is deeply flawed. ‘The problem with nutrient-by-nutrient nutrition science,’ points out Marion Nestle, a New York University nutritionist, ‘is that it takes the nutrient out of the context of food, the food out of the context of the diet, and the diet out of the context of the lifestyle.’"