Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
The United States of America Institute of Medicine Recommendations (2009) for total weight gain during pregnancy, by pre-pregnancy body mass index.
| Pre-pregnancy BMI | BMI (kg.m−2) | Total weight gain range in kg (lb) |
|---|---|---|
| Underweight | <18.5 | 12.7–18 (28–40) |
| Normal weight | 18.5–24.9 | 11.3–15.9 (25–35) |
| Overweight | 25–29.9 | 6.8–11.3 (15–25) |
| Obesity (classes I, II, III) | >30 | 5–9 (11–20) |
