by caryn (10159 Posts), Mon Dec 21, 2009 10:29 am
Study participants gained significantly less weight in their pregnancies when compared with controls (mean weight gain 17 versus 34 pounds, respectively; P = 0.008). Secondary outcomes of preeclampsia, gestational diabetes, cesarean section, as well as infant birth weight did not significantly differ between the groups.
So the groups were too small to really say anything about whether or not controlling weight gain in pregnancy in a population of obese women actually lowers PE rates. In this very small population, it did not -- but there's proof of concept: this tactic did significantly reduce pregnancy weight gain. So now they'll try it in a larger population and check to see whether or not it actually lowers risk of preeclampsia etc. (Personally I suspect it will not affect PE rates, since PE seems to be driven by a placental mismatch. But this would be how to figure out whether or not larger weight gains are causing PE or just correlated to it!)
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