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  • Title: Vitamin A absorption in ascariasis.
    Author: Mahalanabis D, Jalan KN, Maitra TK, Agarwal SK.
    Journal: Am J Clin Nutr; 1976 Dec; 29(12):1372-5. PubMed ID: 998548.
    Abstract:
    Vitamin A absorption was studied in a group of 28 adult patients with ascariasis and 12 healthy adult controls, using a simplified vitamin A absorption test. In over 70% of the patients with ascariasis malabsorption of vitamin A was demonstrated. Stool egg counts for ascaris were not related to the degree of vitamin A malabsorption. Of the 23 patients in whom a D-xylose absorption test was performed, seven showed excretion less than 20% in 5 hr. Immediately after expulsion of the worms, vitamin A absorption improved in 13 out of 14 patients tested (in nine to normal level). The results of this study suggest that ascariasis in populations on marginal intakes of vitamin A and its precursors is an important contributing factor in producing clinical vitamin A deficiency.
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