Those who love rib-eye steaks and double-cream Brie will feel better about their guilty pleasures after reading Nina Teicholz’s article in this weekend’s Wall Street Journal, “The Questionable Link Between Saturated Fat and Heart Disease.” She writes, for example: Too much whole-grain oatmeal for breakfast and whole-grain pasta for dinner, with fruit snacks in between, add up to a less healthy diet than one of eggs and bacon, followed by fish. Gary Taubes covered some of the same ground in his excellent 2008 book, Good Calories, Bad Calories: Fats, Carbs, and the Controversial Science of Diet and Health. Taubes argued...