noted that in the Arctic, very lean meat sometimes produced "digestive disturbances". His prior experience was that lean meat would lead to illness after the second or third fatless week. Stefansson developed nausea and diarrhea on the third day at Bellevue. Stefansson attributes the fast onset of illness due to the lean meat that he was served versus the fattier caribou meat he consumed previously. After eating fatty meat, he fully recovered in two days. However, the initial disturbance was followed by "a period of persistent constipation lasting 10 days". There were no deficiency problems while eating only the kind of fatty meat they requested. The two men remained healthy; their bowels remained normal, except that their stools were smaller and did not smell. Stefansson's gingivitis disappeared by the end of the experiment although there was an increase in the deposit of tartar on his teeth. During this experiment his intake had varied between 2,000 and 3,100 calories per day and he derived an average of almost 80% of his energy from animal fat and almost 20% from animal protein. Daily intake varied from 100-140 grams of protein, 200-300 grams of fat, and 7-12 grams of carbohydrates. References Literature Stefansson, Vilhjalmur. My Life with the Eskimo; The Macmillan Company, New York, 1912. Stefansson, Vilhjalmur. Stefánsson-Anderson Expedition, 1909–12; Anthropological Papers, AMNH, vol. XIV., New York, 1914. Stefansson, Vilhjalmur. The Friendly Arctic; The Macmillan Company, New York, 1921. Stefansson, Vilhjalmur. The Standardization of Error; W. W. Norton & Company, Inc., New York, 1927. Stefansson, Vilhjalmur. Unsolved Mysteries of the Arctic; The Macmillan Company, New York, 1938. Stefansson, Vilhjalmur. Not by Bread Alone; The Macmillan Company, New York, 1946. Stefansson, Vilhjalmur. The Fat of the Land; The Macmillan Company, New York, 1956. Stefansson, Vilhjalmur. Discovery – the autobiography of Vilhjalmur Stefansson; McGraw-Hill Book Company, New York, 1964. Stefansson, Vilhjalmur. Cancer: Disease of civilization? An anthropological and historical study; Hill and Wang, Inc., New York, 1960. Stefansson, Vilhjalmur (ed.). Great Adventures and Explorations; The Dial Press, 1947. Diubaldo, Richard. Stefansson and the Canadian Arctic; McGill-Queen's University Press, Montreal, 1978. Stefansson, Vilhjalmur. Lessons in living from the Stone Age. Hunt, William R. Stef: A Biography of Vilhjalmur Stefansson, Canadian Arctic explorer; University of British Columbia Press, Vancouver, 1986. Jenness, Stuart Edward. The Making of an Explorer: George Hubert Wilkins and the Canadian Arctic Expedition, 1913–1916; McGill-Queen's Press – MQUP, 2004. Niven, Jennifer. The Ice Master: