| Abstract: | This approach suggests that the healthier the sample, the greater the daily vitamin A intake. Under the conditions of this experiment, approximately 33,000 I.U. of vitamin A may be designated as the "ideal" daily allowance. This is almost seven times the RDA of 5000 I.U. for the adult male and eight times higher than the 4000 I.U. RDA for adult females. It is recognized that the "ideal" is nonexistent as a theoretic end-point since there is biochemical individuality and because the art of measuring leaves much to be desired. Nonetheless, the technique utilized here provides a mechanism and a goal not previously considered. |
