The Paleo diet, the South Beach diet, the gluten-free diet, the anti-inflammatory diet… Most Americans are obsessed with finding a way to eat well and stay healthy.

In the new book, biological anthropologist Stephen Le argues that the best diet is the one our ancestors ate. Le travelled to Vietnam, China, Kenya, India, and other countries to understand how cuisines in those places have evolved over thousands of years.

His conclusion: too many societies have strayed far from their ancestral diets, and we should start incorporating what our great-great-great-great-great-grandparents ate in our diet.

Guest:

Stephen Le, author of “100 Million Years of Food: What Our Ancestors Ate And Why It Matters Today” (Picador, 2016). He is currently a visiting professor of biology at the University of Ottawa, Canada