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. Author manuscript; available in PMC: 2016 Apr 1.
Published in final edited form as: Int J Obes (Lond). 2015 Jan 5;39(4):642–649. doi: 10.1038/ijo.2015.15

Table 2.

Recommendations for total and rate of weight gain during pregnancy by prepregnancy BMI13

Prepregnancy BMI BMI+
(kg m−2)
(WHO)		 Total weight
gain range
(lbs)		 Rates of weight
Gaina 2nd and 3rd
trimester (mean range in
lbs per week)
Underweight < 18.5 28–40 1 (1–1.3)
Normal Weight 18.5–24.9 25–35 1 (0.8–1)
Overweight 25.0–29.9 15–25 0.6 (0.5–0.7)
Obese (includes all classes) ≥30.0 11–20 0.5 (0.4–0.6)

Abbreviations: BMI, body mass index; WHO, World Health Organization.

a

Calculations assume a 0.5–2 kg (1.1–4.4 lbs) weight gain in the first trimester.