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Table 6 Recommended Pregnancy Weight Gain Rates by Pre-pregnancy BMI

From: Maternal health behaviors during pregnancy in rural Northwestern China

  Rates of Weight Gaina 2nd and 3rd Trimester
Pre-pregnancy BMI Mean (range) in kg/week
Underweight (< 18.5 kg/m2) 0.51 (0.44–0.58)
Normal weight (18.5–24.9 kg/m2) 0.42 (0.35–0.50)
Overweight (25.0–29.9 kg/m2) 0.28 (0.23–0.33)
Obese (≥ 30.0 kg/m2) 0.22 (0.17–0.27)
  1. Modified from Institute of Medicine (US). Weight gain during pregnancy: reexamining the guidelines. Washington, DC. National Academies Press; 2009.©2009 National Academy of Sciences
  2. aCalculations assume a 0.5–2 kg weight gain in the first trimester
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