Institute of Medicine (IOM) Guidelines for Weight Gain in Pregnancy
| Initial Body Mass Index | IOM Recommended Weight Gain, lb |
|---|---|
| From the Institute of Medicine.4 | |
| <19.8 (underweight) | 28–40 |
| 19.8–26.0 (normal) | 25–35 |
| 26.1–29.0 (overweight) | 15–25 |
| >29.0 (obese) | At least 15 |