Frassetto LA, Schloetter M, Mietus-Synder M, Morris RC Jr, Sebastian A.:
Metabolic and physiologic improvements from consuming a paleolithic, hunter-gatherer type diet.
In: Eur J Clin Nutr. 2009 Aug;63(8):947-55. Epub 2009 Feb 11
"(...) CONCLUSIONS:
Even short-term consumption of a paleolithic type diet improves BP and glucose tolerance, decreases insulin secretion, increases insulin sensitivity and improves lipid profiles without weight loss in healthy sedentary humans."
http://www.ncbi.nlm.nih.gov/pubmed/19209185