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. Author manuscript; available in PMC: 2014 Oct 1.
Published in final edited form as: Nutr Rev. 2013 Oct;71(0 1):10.1111/nure.12074. doi: 10.1111/nure.12074

Table 1.

Gestational weight gain recommendations by maternal prepregnancy body mass index—US Institute of Medicine, 2009.

Prepregnancy BMI Total weight gain
(lb, kg)		 Rate of weight gain in the
2nd and 3rd trimesters
(lb/wk, kg/wk)
Underweight (< 18.5 kg/m2) 28–40, 12.5–18 1.0 (1.0–1.3), 0.51 (0.44–0.58)
Normal-weight (18.5–24.9 kg/m2) 25–35, 11.5–16 1.0 (0.8–1.0), 0.42 (0.35–0.50)
Overweight (25.0–29.9 kg/m2) 15–25, 7–11.5 0.6 (0.5–0.7), 0.28 (0.23–0.33)
Obese (≥ 30.0 kg/m2) 11–20, 5–9 0.5 (0.4–0.6), 0.22 (0.17–0.27)