Pregnancy weight gain (IOM 2009)
Recommended pregnancy weight gain range by pre-pregnancy BMI. Supports twin pregnancies and current gestational age.
About this calculator
IOM 2009 guidelines stratify weight gain targets by pre-pregnancy BMI. ACOG Committee Opinion 548 (2013, reaffirmed 2024) advises individualizing goals for women at BMI extremes.
Source
Formula version: iom-2009-acog-2024-v1
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