Physician and biochemist Cate Shanahan, M.D. examined diets around the world known to help people live longer, healthier lives?diets like the Mediterranean, Okinawa, and “Blue Zone”?and identified the four common nutritional habits, developed over millennia, that unfailingly produce strong, healthy, intelligent children, and active, vital elders, generation after generation. These four nutritional strategies?fresh food, fermented and sprouted foods, meat cooked on the bone, and organ meats?form the basis of what Dr. Cate calls “The Human Diet.”