In summary, our study shows that obese women, although gaining
significantly less weight than non-obese women, have a GWG above
the value recommended by the IOM and that such excessive GWG increases
the risk of macrosomia. Women in obesity class II and III with
a GWG in linewith the recommendations gave birth to heavier children
than did non-obeseweightwomen, indicating that GWG recommendations
should be stratified according to obesity class. Further studies are
needed to evaluate the IOM GWG recommendations and their implications
for obesity classes II and III.