Smoking and your baby

Nicotine in breast milk disrupts babies' sleep patterns and shortens naps by one third, according to a new study, "Infants spent less time sleeping overall and woke up from naps sooner when their mothers smoked prior to breast-feeding," lead author said in a prepared statement. Previous research had shown that nicotine levels peak in breast milk 30 minutes to 60 minutes after smoking one to two cigarettes and are gone after three hours, suggesting that mothers can time their smoking and breast-feeding opportunities.