Research on the effects of natural mineral waters for alleviating human ills is becoming more and more recognized in this country. In this paper I discuss that branch of biochemistry which describes the elements usually present in the body only in small amounts. Their physiologic effects recall those of vitamins and enzymes. The brilliant advances in organic biochemistry during recent years have proved the metabolic effects of organic substances present only in infinitesimal amounts. It is not yet well known that these organic substances are usually linked with metallic ions or mineral elements. The study of mineral elements or mineral metabolism of human beings leads to nutritional problems and discussion of dietary habits and their scientific justification, which are questions of importance for the practitioner. It leads further to discussions of the therapeutic value of natural mineral waters. There is no more urgent time than the present to make all
BAUDISCH O. THE IMPORTANCE OF TRACE ELEMENTS IN BIOLOGIC ACTIVITY. JAMA. 1943;123(15):959–966. doi:10.1001/jama.1943.82840500004008
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