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1. Smoking and use of electronic cigarettes (vaping)  in relation to preterm birth –

   • Around pregnancy, women who smoke might be inspired to switch to vaping (using electronic cigarettes, or e-cigs) in an effort to reduce the known risks of smoking.
   • E-cigarettes normally include nicotine, but they either completely eliminate or drastically cut down on exposure to tobacco’s combustion byproducts.
   • 31 973 live singleton births in the United States were the subject of our study in 2016.
   • 5029 (14%) mothers were “single smokers” during the three months prior to becoming pregnant, while 976 (3%) mothers used both tobacco and e-cigarettes (“dual-users”).
   • 44% of pre-pregnancy single smokers stayed single smokers, whereas 1% switched to dual use in the last trimester.
   • However, late-pregnancy sole vapers and dual-users had increased risk of SGA compared to non-users (aOR 2.4, 95% CI 1.0-5.7 for sole vapers, and aOR 2.3 95% CI 1.3-4.1 for dual-users).
   • These findings suggest that vapers during pregnancy had similar risk of preterm as non-users but still had elevated risk for restricted fetal growth.

   What is e-cigarette meaning?

   A device that has the shape of a cigarette, cigar, or pen and does not contain tobacco. It uses a battery and contains a solution of nicotine, flavorings, and other chemicals, some of which may be harmful.

   Learn more about E-cigarettes

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