There is a large, divisive and emotional debate occurring in the health movement. On the one side there are advocates of meat-based (paleo, primal) or fat-based diets (ketogenic), and on the other side those advocating whole-food, plant-based diets (vegetarian, vegan). These diets have much in common (e.g. rejection of refined sugar, refined carbs and fast food, embracing of green vegetables and healthy oils) and fundamental differences too. Although there is no one perfect diet for every person, which diet in general is healthier? Which better promotes longevity? Learn what the science says.

131 -min. DVD