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Significance of Strontium⁹⁰ in Milk. II

A Review of Recent Data and Analysis of Areas Needing More Elaboration to Define the Role of Milk in the Diet

Laboratory of Biochemistry, Department of Dairy Science, University of Illinois, Urbana

ABSTRACT

Recent data are summarized in this second review article on the significance of Strontium⁹⁰ (Sr⁹⁰) and other radioactive fallout in milk and other foods. This is followed by an analysis of areas needing more definition in the Sr⁹⁰ problem. For a simplified review, the reader is referred to the Our Industry Today section in this issue of the JOURNAL.

The evidence now accumulating indicates that peoples in the primary milk-consuming areas are acquiring relatively lower levels of Sr⁹⁰ in their bones than peoples in the primary plant-consuming areas. This is attributed to the high calcium level present in milk, protecting against the high levels of Sr⁹⁰ accumulating in the foods of plant origin present in the human diet. Calculations show that for minimum deposition of Sr⁹⁰ in human bones it may be just as wise to increase milk consumption as to try to remove the Sr⁹⁰ from milk. The role of milk in the diet is discussed, and areas that need more clarification are delineated.