The bugger off was to me to not over post here. The low carb Paleo Primal arguments go well for the last two, humans did not evolve to eat grains. So they and I don't eat grains.
And all three find refined carbs and sugar to be the most common reason for being overweight and sick. So even small or controlled amounts of stuff that makes you sick are not the way to go. Why make your body work so hard to detox? Give it good, whole food, and watch it and you thrive.