Study shows marijuana users twice as likely to give birth prematurely

For the researchers of the study, the results present a “a major public health concern” as a number of pregnant women would report taking marijuana to alleviate morning sickness or nausea – without knowing of the adverse side-effects.

http://www.sciencedirect.com/science/article/pii/S0890623816300715#    

Highlights

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Marijuana increases the risk of spontaneous preterm birth independent of cigarette smoking status and socio-economic status.

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Women who continue to use marijuana at 20 weeks’ gestation are five times more likely to deliver preterm than those who do not.

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The rate of early SPTB is higher amongst women who continue to use marijuana at 20 weeks’ gestation.