In a hunter-gatherer world, and most of the history of agriculture, there was a constant battle just to produce enough calories and not starve to death. Now we have so much food that is so easily accessable, that too much calories is a problem. Eating the Paleo diet reduces carbs so that you can maintain fairly even weight in an over-abundant modern world. R. Keene Richard Keene, Novell Inc, Provo, Utah, 801-861-4389, [log in to unmask]