pmezak, my blood type is O, can't remember if its positive or negative. I have never read that blood type book, though I know people swear by it. I am sticking with low carb because my hunger and cravings are out of control when I eat too many carbs. Things that would fill up normal people just make me want to eat more. Its depressing... goes right along with this discussion about depression. I battle with it too. Also have gluten intolerance. There must be a connection. Too many of us have the same symptoms.