Arctic explorer and anthropologist Dr. Vilhjalmur Stefansson spent years living with indigenous Inuit and Eskimo people.
He noted their general healthiness (and good teeth), and an absence of many of the diseases that plagued western cultures, such as scurvy, heart disease, and diabetes.
Observing their dietary habits, he determined that their primary food was meat, both lean and fatty, and that their diets were very low in sugary or starchy carbohydrates