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OBJECTIVE:

To estimate whether antenatal dietary interventions restrict maternal weight gain in obese pregnant women without compromising newborn birth weight.

DATA SOURCES:

PubMed and Cochrane Controlled Trials Register were searched using free-text search terms: pregnancy, obesity, overweight, dietary intervention, lifestyle, and randomis (z) ed controlled trial through March 2011 in a similar search strategy to that used in a previous systematic review.

METHODS OF STUDY SELECTION:

We included randomized controlled trials in which antenatal dietary intervention was provided to pregnant women who were overweight or obese at booking. We extracted 263 abstracts or reports, from which 39 full-text articles were reviewed.