Staffan Lindeberg at the Department of Medicine, Lund University, Sweden has performed the first controlled study of a Paleolithic diet in humans and it appears to improve blood glucose reaction to carbohydrates in Type 2 Diabetes patients reports ScienceDaily.

A Paleolithic diet is what humans ate prior to the development of agriculture, primarily fruit, vegetables, nuts, lean meat and fish.  Half of the patients in this study were asked to eat lean meat, fish, fruit, vegetables, root vegetables and nuts, and to avoid grains, dairy foods and salt for three months.  The other half had a “Mediterranean-like prudent diet” with whole-grain cereals, low-fat dairy products, fruit, vegetables and refined fats generally considered healthy.  While the Mediterranean diet did not have much of an effect (-7%) the Paleolithic diet had a large effect (-26%) after twelve weeks and at the end of the study all of the Paleolithic diet patients had normal blood glucose.