McClellan WS, DuBois EF. Prolonged meat diets with a study of kidney function and ketosis. J Biol Chem 1930;87:651-80 This study was conducted on Stefansson while he was at Belvue Hospital eating only meat and fat. No ill effects were noted except high cholesterol levels in response to cafestol in the boiled coffee he and his companions drank. See: Mol Endocrinol. 2007 Jul;21(7):1603-16. Epub 2007 Apr 24. The cholesterol-raising factor from coffee beans, cafestol, as an agonist ligand for the farnesoid and pregnane X receptors. Ricketts ML, Boekschoten MV, Kreeft AJ, Hooiveld GJ, Moen CJ, Müller M, Frants RR, Kasanmoentalib S, Post SM, Princen HM, Porter JG, Katan MB, Hofker MH, Moore DD. "Cafestol, a diterpene present in unfiltered coffee brews such as Scandinavian boiled, Turkish, and cafetière coffee, is the most potent cholesterol-elevating compound known in the human diet"