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METABOLISM DURING THE REPRODUCTIVE CYCLE

JAMA. 1930;94(24):1920-1921. doi:10.1001/jama.1930.02710500038014.
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The conclusion that notable metabolic demands are made on the maternal organism during the reproductive cycle is well founded both on animal experiments and on clinical observation of women during the child bearing and child rearing stages. Indeed, some of the established facts lead one to ask whether the modern science of nutrition cannot contribute to the improvement of conditions that often arise in the course of pregnancy and lactation. It has been clearly demonstrated, for example, that, despite liberal feeding during the period of lactation, cows yielding large amounts of milk are likely to experience considerable drains on their stores of calcium. Accordingly, it has been remarked1 that it is important to know whether certain losses manifest themselves in the mother herself or in her offspring. Furthermore, it is essential to learn whether specific care, the right kind and amount of exercise, good hygiene, a satisfactory state of

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