Ref One. Henrietta Fleck, Introduction to Nutrition, 4th ed. (New York: Macmillan, 1981), 385. Ref Two. Ibid. Ref Three. Steve Carper, Milk is Not for Every Body (New York: Facts on File, 1995), 11. Ref Four. R.K. Montgomery et al., "Lactose Intolerence and the Genetic Regulation of Intestinal-phlorizin Hydrolase," FASEB J 5(1991): 2824-2832: F.J. Simoons, "The geographic hypothesis of lactose malabsorbtion," Did Dis Sci, 23 (1989): 963-980. Ref Five. Carper, Milk is Not for Every Body, 1. Ref Six. Gordon M. Wardlaw and Paul M. insel. Perspectives in Nutrition. (St Louis: Mosby, 1996), 535.