Interesting. Glad to read this. I just heard this week about eating for your metabolic type. Might be snake-oil like hype, but it suggests that some do better on high carb, low fat. That is actually type B. I am thinking I might be a type B, or a Type C - that is if there is anything to this. All I know is that when I was dieting SAD way, my carbs were higher, my fats were low and I was losing 10lbs a month. I switched to primal, and have slowed to 4lbs a month. So I am thinking my balance is primal foods, but shift the macros. But FIRST, I am going to try the type C, which is about a 3rd split, because I am already low carbing, so I don't want to swing that far yet.