Abstract
Four healthy young women were given rations with a calcium content approximating their minimum requirement, and calcium balance determined from analysis of food, urine and feces. In two cases the experimental period was about two weeks, and in the other two, about three weeks. In two cases the carrot period was preceded by a period in which the calcium was derived chiefly from milk. In all cases the subjects had had their digestive capacity tested by previous digestion experiments.
About 400 grams of cooked carrot were eaten by each subject daily, furnishing from 55 to 84 per cent. of the calcium ingested. In all cases but one there was a positive calcium balance, and in this case the loss was small. In one case, the balance was nearly the same on a diet in which 55 per cent. of the calcium was derived from carrots as on one in which 70 per cent. was furnished by milk. The total calcium intake and the per cent. of the intake gained or lost are shown below:
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