Both paleontologists studying the fossils of our ancestors and anthropologists documenting the diets of indigenous people today say the picture is a bit more complicated. The popular embrace of a Paleo diet, Ungar and others point out, is based on a stew of misconceptions. Those eating a plant-based diet should ensure a proper supply of vitamin B12 by taking dietary supplements and/or using vitamin B12 toothpaste. When you encounter an animal as enormous as an elephant, you can’t help but …
