Chocolate Consumption May Have Positive Effects on Placenta and Fetal Growth & Development; Flavanol Content May Not Be Relevant to These Putative Positive Effects of Chocolate

In a report to be presented on Thursday, February 4, 2016, at 1:15 p.m. EST, at the Society for Maternal-Fetal Medicine's (SMFM’s) annual meeting, The Pregnancy Meeting™, in Atlanta, Georgia, researchers from Canada will present findings from a study titled, “High-Flavanol Chocolate to Improve Placental Function and to Decrease the Risk of Preeclampsia: A Double-Blind Randomized Clinical Trial.” In light of previous studies showing conflicting results regarding the role of chocolate consumption during pregnancy and the risk of preeclampsia, this study set out to evaluate the impact of high-flavanol chocolate. Researchers conducted a single-center randomized controlled trial of 129 women with singleton pregnancy between 11 and 14 weeks gestation who had double-notching on uterine artery Doppler. The pregnant women selected were randomized to either high-flavanol or low-flavanol chocolate. A total of 30 grams of chocolate was consumed daily for 12 weeks and women were followed until delivery. Uterine artery Doppler pulsatility index was at baseline and 12 weeks after randomization. Preeclampsia, gestational hypertension, placenta weight, and birthweight were also evaluated. The result was that there was no difference in preeclampsia, gestational hypertension, placental weight, or birthweight in the two groups; however, the uterine artery Doppler pulsatility index (a surrogate marker of blood velocity in the uterine, placental and fetal circulations) in both groups showed marked improvement that was much greater than expected in the general population.
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