When will they ever learn? "a calorie is a calorie" how lame, some calories promote insulin response, some don't. "endocrinology 101" as Gary Taubes put it. Anyhow, they never really believed a "calorie is a calorie" because the prof nutritionists have been putting it out for years that it isn't the pasta makes you gain, its the fatty sauces, it isn't the baked potato, its the butter. We can only be grateful for studies like this, but don't expect the lowfat crowd to admit anything right away.