Before the advent of agriculture, our caveman ancestors ate mostly protein and fat. They had almost zero carbohydrates. They might have had some access to wild berries or fruits, however, their diet consisted mainly of animals that they killed. The cavemen got along just fine with this low and sometimes zero carb diet. In fact, they were in great shape, as they hunted and killed animals much larger than themselves. So, I ask the question, can we live withour carbs at all?