Weight gain in pregnancy.

Hytten FE; Leitch I
In: Hytten, F.E. and Leitch, I. The physiology of human pregnancy. Oxford, Blackwell, 1971. p. 265-285

Published records have shown that the range of weight gain during pregnancy is wide and that the incidences of clinical complications rise at the extreme ends of the range. Studies have shown that the maximum rate of gain was between 17 and 28 weeks. The net weight gain measured in the first 2 months following delivery ranged from a loss of .09 kg to a gain of 8 kg and it was closely linked to total gain in pregnancy. The estimated total weight gain in healthy primigravidae eating without restriction is 12.5 kg (27.5 lb) with an average weight gained at certain points of pregnancy as follows: at 10 weeks 650 gm (approximately 1.5 lb), at 20 weeks 4000 gm (approximately 9 lb) at 30 weeks 8500 gm (about 19 lb) and at term 12,500 gm (about 27.5 lb). These norms refer to primigravidae. Evidence suggests that the average multigravida gains approximately .9 kg (2 lb) less than the primigravidae.

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