I agree with you 100% about refined carbs. The book I mentioned "The new glucose revolution" is all about that. I don't completely agree,however, that the #1 reason people live longer is Antibiotics . There are many reasons including the fact that people no longer live and work in close proximity to work animals and unsanitary conditions. I know people in their 70's who live completely organic lives (no innoculations, no Antibiotics ) and are healthy and vibrant. In fact I hope to be that healthy when I reach that age. My point in mentioning it was that the diet of our ancestors is often cited as evidence for Atkins. There is no evidence that the diet improved the health of our ancestors in any way. Like I mentioned earlier, also, the meat was very different than supermarket meat we eat today. I forgot to mention in my earlier posts also, ratios of macronutrients do vary somewhat from person to person. The basic concepts, however, are consistent for most people.