Women who vape are more likely to have low birthweight babies, study shows UCLA Nicotine products in any form, whether from cigarettes, vaping or chewing tobacco, pass into a mother's bloodstream and through the placenta to the growing baby. Quitting nicotine is hard for many people, England paying pregnant smokers to switch to e cigs while evidence of damage to developing fetuses grows Stanton Glantz blog Flavored e cigarettes modulate embryo development, fetal growth, and potentiate early fetal demise without nicotine Communications Medicine Smoking, vaping & pregnancy: in pictures Raising Children Network