Maternal tobacco use and extremely premature birth - a population-based cohort study

What is it about?

Maternal smoking is one of the most important preventable risk factors in pregnancy and associated with increased risk of stillbirth, fetal growth reduction and preterm birth. Preterm birth is the leading cause of neonatal mortality and morbidity globally. Use of other nicotine products than cigarettes are often regarded safer than smoking. However, this study shows that use of Swedish snuff (containing merely nicotine and no combustion products) in pregnancy is associated with increased risk of extremely, very and moderately preterm birth. In addition, if women stopp smoking or using snuff in very early pregnancy, there is no increased risk. The implication of this study is that nicotine in any form should be avoided in pregnancy.

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