The present study was undertaken to determine the antirachitic potency of irradiated evaporated milk and to compare its efficacy with that of vitamin D milk from cows fed irradiated yeast, reported in a previous papers.1 Because of its cheapness and availability, irradiated evaporated milk is destined to have a much wider distribution and use than metabolized vitamin D milk, especially among persons of the poorer classes, whose purchasing power, even of the necessities of life, is limited.
The direct irradiation of evaporated milk on a commercial basis was first undertaken in 1934, and several clinical studies relating to its prophylactic and curative efficacy have appeared since that date.
Jeans and Stearns2 in 1934 first reported results with this product. They compared it with nonirradiated evaporated milk fortified with the unsaponifiable fraction of cod liver oil (Zucker concentrate) and with nonirradiated evaporated milk to which plain cod liver oil
DAVIDSON LT, MERRITT KK, CHIPMAN SS. PROPHYLAXIS OF RICKETS IN INFANTS WITH IRRADIATED EVAPORATED MILK. Am J Dis Child. 1937;53(1_PART_I):1-21. doi:10.1001/archpedi.1937.04140070010001