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Table 1 The American Institute of Medicine (IOM) recommendations for gestational weight gain [5]

From: Associations of pre-pregnancy body mass index and gestational weight gain with pregnancy outcome and postpartum weight retention: a prospective observational cohort study

Prepregnant BMI categories

According to IOM recommendations

< 18.5

12.5 – 18 kg

18.5-24.9

11.5 – 16 kg

25 – 29.9

7 – 11.5 kg

>30.0

5-9 kg