I've been reading this thread, and wondering about the truth behind certain nutrients, especially vitamin C, E and especially magnesium. Looking into nutritiondata.com (I hope that's a reliable source) I noticed that if I put in a whole day's worth of just eating meat/fat, my numbers came out TERRIBLE for these 3 nutrients. I wonder why a pure carnivore would not need higher levels of these - especially something like magnesium which is very important for all kinds of things. Being a woman I take magnesium for TOM cramps and backache (which I haven't had this time round doing low-carb + Mg).