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Weight gain

(Institute of Medicine 2009)

Singleton pregnancy

  • BMI <18.5 kg/m2 (underweight): 28-40 lbs (1–1.3 lbs/wk)
  • BMI 18.5 to 24.9 kg/m2 (normal weight): 25-35 lbs (0.8–1 lbs/wk)
  • BMI 25.0 to 29.9 kg/m2 (overweight): 15 to 25 lbs (0.5–0.7 lbs/wk)
  • BMI ≥30.0 kg/m2 (obese): 11 – 20 lbs (0.4–0.6 lbs/wk)