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The discussion began with a comment by Dr. Rush, who wondered whether calories ingested by the mother could be transported directly to the fetus without first being stored as fat in the mother. This question was prompted by data presented by Dr. Lechtig showing that there was a relationship between caloric intake and birth weight that remained significant even when it was controlled for the third trimester maternal weight. Dr. Kass agreed that maternal weight gain is the best predictor of infant weight, but questioned whether effect of food supplement could be interpreted unless prepregnant weight of the mother was considered. Dr. Lechtig pointed to the differences between mothers in the industrialized countries and those in Guatemala, where the average weight gain during pregnancy is 7 kg (15 lb) and the mean birth weight 3 kg (6.6 lb), and in whom it is unlikely there would be any storage of
Summarized Discussion of Session III. Am J Dis Child. 1975;129(5):570. doi:10.1001/archpedi.1975.02120420026008