Influence of alcohol and tobacco consumption on maternal and perinatal outcomes of puerperal women attended at the Brazilian National Health System

Abstract Objectives: to evaluate the association between alcohol and tobacco consumption during pregnancy with maternal and child health conditions. Methods: cross-sectional study with a probabilistic sample of pregnant women living in Santa Catarina who conducted prenatal care and childbirth in the public national health service in 2019. A face-to-face survey questionnaire was applied to 3,580 pregnant women including maternal health issues during pregnancy and perinatal health of the newborn. Crude logistic regression analyzes were performed and adjusted for socio-demographic and maternal health conditions. Results: the prevalence of alcohol and tobacco consumption during pregnancy was 7.2% and 9.3%, respectively. Alcohol consumption during pregnancy increased the chance of maternal anemia by 45% (CI95%=1.09-1.91), increased the chance of gestational diabetes by 73% (CI95%=1.14-2.63) and reduced the chance of hypertension (OR=0.59; CI95%=0.37-0.94). Tobacco consumption doubled the chance of low birth weight (OR=2.16; CI95%=1.33-3.51). Conclusion: the consumption of alcoholic beverages during pregnancy increased the chance of maternal health complications, such as anemia and gestational diabetes, while tobacco increased the chance of low birth weight.