Dr. Richard Bernstein is a type one diabetic, 80 years old and controls his blood sugar with diet and exercise alone. He takes his heart rate up to his age-calculated maximum daily and prescribes the same.

What evidence do you have that Paleo or low-carb is not healthy in the long run? The native ethnic groups in the Yamalo-Nenets region of Siberia have lived low-carb Paleo, eating mostly venison and fresh river fish, since time immemorial and thrived. Only recently have they started to suffer obesity, with the introduction of noodles and other carbs to their diets. Their exercise and diets are otherwise not much different (although their migration patterns have become shorter to stay closer to oil and gas facilities with which they trade).