Question: What is the effect of maternal cannabis use on newborn birth weight?
Answer: A recent meta-analysis reported: “Infants exposed to cannabis in utero had a decrease in birth weight (low birth weight pOR=1.77: 95% CI 1.04 to 3.01; pooled mean difference (pMD) for birth weight=109.42 g: 38.72 to 180.12) compared with infants whose mothers did not use cannabis during pregnancy.” (Gunn JKL et al. Prenatal exposure to cannabis and maternal and child health outcomes: a systemic review and meta-analysis. 2016 BMJ Open 6:1-*)
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