Don't smoke or use nicotine during pregnancy or after your baby is born.
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Smoking while you’re pregnant, and smoke in your baby’s environment after birth, are significant risk factors for SIDS. Don’t smoke anywhere near your baby, even if you’re outside. This includes vaping and electronic cigarettes, which contain nicotine. Keep your car and home smoke-free. Get rid of secondhand smoke in any areas your baby and other nonsmokers spend time. If you’re a smoker or you smoked during pregnancy, remember that it’s especially important that you don’t bed share with your baby. The risk of SIDS is especially high, even when the smoker doesn’t smoke in bed.