Chocolate consumption in pregnancy and reduced likelihood of preeclampsia.
BACKGROUND
Preeclampsia is a major pregnancy complication with cardiovascular manifestations. Recent studies suggest that chocolate consumption may benefit cardiovascular health.


METHODS
We studied the association of chocolate consumption with risk of preeclampsia in a prospective cohort study of 2291 pregnant women who delivered a singleton livebirth between September 1996 and January 2000. Chocolate consumption was measured by self report in the first and third trimesters, and by umbilical cord serum concentrations of theobromine, the major methylxanthine component of chocolate. Preeclampsia was assessed by detailed medical record review for 1943 of the women. We derived adjusted odds ratios (aOR) and 95% confidence intervals (CIs) from logistic regression models controlling for potential confounders.


RESULTS
Preeclampsia developed in 3.7% (n = 63) of 1681 women. Cord serum theobromine concentrations were negatively associated with preeclampsia (aOR = 0.31; CI = 0.11-0.87 for highest compared with lowest quartile). Self-reported chocolate consumption estimates also were inversely associated with preeclampsia. Compared with women consuming under 1 serving of chocolate weekly, women consuming 5+ servings per week had decreased risk: aOR = 0.81 with consumption in the first 3 months of pregnancy (CI = 0.37-1.79) and 0.60 in the last 3 months (0.30-1.24).


CONCLUSIONS
Our results suggest that chocolate consumption during pregnancy may lower risk of preeclampsia. However, reverse causality may also contribute to these findings.
Triche
Elizabeth W
EW
Yale Center for Perinatal, Pediatric and Environmental Epidemiology, Yale University, New Haven, CT 06510, USA. elizabeth.triche@yale.edu
Grosso
Laura M
LM
Belanger
Kathleen
K
Darefsky
Amy S
AS
Benowitz
Neal L
NL
Bracken
Michael B
MB
D000328:Adult; D002099:Cacao; D015986:Confounding Factors, Epidemiologic; D003237:Connecticut / Q000453:epidemiology; D005260:Female; D006801:Humans; D016015:Logistic Models; D008404:Massachusetts / Q000453:epidemiology; D011225:Pre-Eclampsia / Q000453:epidemiology* / Q000517:prevention & control*; D011247:Pregnancy; D011446:Prospective Studies