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Table 1 recommendations for total and rate of weight gain during pregnancy, by pre-pregnancy BMI

From: Pattern of weight gain in pregnant women in slum areas of Hamadan using multilevel ordinal regression

Pre-pregnancy BMI (kg/m2)

Category of Pre –pregnancy BMI

Total weight gain range (kg)

Rates of weight gain from the beginning of week 13 onwards (kg / week)

< 18.5

under weight

12.5–18

0.51 (0.44–0.58)

18.5–24.9

normal weight

11.5–16

0.42 (0.35–0.50)

25–29.9

over weight

7–11.5

0.28 (0.23–0.33)

≥ 30

obese

5–9

0.22 (0.17–0.27)

  1. Source: Guidelines on Maternal Nutrition in Iran [26] adopted from Institute of Medicine, 2009