Milk, the universally perfect food, its compositional quality and bacteriological purity causing few qualms nowadays in this country and outbreaks of milk‐borne disease relatively rare, it may come as a surprise that there is another aspect of milk consumption causing discussion and not a little controversy in medical circles. There is an increasing awareness of milk allergy in infancy and in certain adult disorders, evidenced less by serological tests than by the relief afforded by milk‐free diets and the return of symptoms on the re‐institution of a milk diet. Skin tests also are not particularly reliable but the serological tests have at least demonstrated anti‐bodies to milk proteins in most artificially fed babies after the age of seven weeks (Gunther, M. et al, 1960).