The effect of the 2009 revised U.S. guidelines for gestational weight gain on maternal and infant health: a quasi-experimental study

Table 1 Guidelines for recommended gestational weight gain, by pre-pregnancy body mass index

		Pre-pregnancy Body Mass Index
		Overweight	Obese
Version of IOM Guidelines	1970 guideline	20–25 lbs	20–25 lbs
	1990 revision	15–25 lbs	≥15 lbs^a
	2009 revision	15–25 lbs	11–20 lbs

Overweight (body mass index 25.0–29.9); Obese (body mass index ≥30.0)
Abbreviations: IOM Institute of Medicine
^aWhile there was no maximum gestational weight gain recommended for women who were obese in the 1990 IOM guidelines, in practice it was considered to be similar to that for women who were overweight (i.e., 25 lbs) [12, 13].

ISSN: 1471-2393