Prepregnancy weight class | Prepregnancy body mass index (kg/m2) | Recommended weight gain |
Underweight | <18.5 | 31 to <35 pounds (14 to <16 kg) |
Normal | 18.5 to 24.9 | 22 to <40 pounds (10 to <18 kg) |
Overweight | 25.0 to 29.9 | 4 to <35 pounds (2 to <16 kg) |
Obese (class I) | 30.0 to 34.9 | 4 to <13 pounds (2 to <6 kg) |
Obese (class II) | 35.0 to 39.9 | Either weight loss or gain 0 to <9 pounds (0 to <4 kg) |
Obese (class III) | ≥40.0 | 0 to <13 pounds (0 to <6 kg)* |
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