Carbs are the only macro-nutrient your body doesn't need. It's true though that a very low carb diet is detrimental to the health insofar, that it forbids certa

Carbs are the only macro-nutrient your body doesn't need. It's true though that a very low carb diet is detrimental to the health insofar, that it forbids certain nutrient-dense foods (which grains absolutely aren't). Repeating wrong convential wisdom doesn't make it correct. Seriously, Marks knows his stuff and you'd do good to yourself to listen to him (or any other of the primal/paleo folk) without prejudices.