Table 1.
IOM 2009 gestational weight gain recommendations
| Pre-pregnancy BMI category | Total weight gain (kg) | Rate of weight gain in 2nd and 3rd trimesters (kg/week)a |
|---|---|---|
| Underweight (<18.5 kg/m2) | 12.5–18 | 0.51 (0.44–0.58) |
| Normal weight (18.5–24.9 kg/m2) | 11.5–16 | 0.42 (0.35–0.50) |
| Overweight (25–29.9 kg/m2) | 7–11.5 | 0.28 (0.23–0.33) |
| Obeseb (≥30 kg/m2) | 5–9 | 0.22 (0.17–0.27) |
a
Calculations assume a first trimester weight gain of 0.5–2.0 kg. Data are presented as mean (range)
b
1990 IOM recommendation: for obese women (BMI >29), weight gain at least 6.8 kg
Adapted from Committee Opinion Number 548: Weight gain during pregnancy, The American College of Obstetricians and Gynecologists (2013) [1]