Study uncovers shift from cigarettes to vapes among pregnant teens with mixed impact on newborns' health In the United States, about 8% of all women who are pregnant smoke cigarettes, and another roughly 4% report using electronic cigarettes or vapes. To learn more about the dangers of smoking Is It Safe To Vape If You're Pregnant? University Hospitals We've updated our vaping during pregnancy resource. Created in partnership with ASH, the Royal College of Midwives and Sands, the infographic has important guidance around vapes and pregnancy. The resource is now Electronic cigarettes and vaping Tommy's Think vaping is safe during pregnancy? Think again