If your health isn't enough to make you quit smoking, then the health of your baby should be. Smoking during pregnancy affects you and your baby's health before, during, and after your baby is born. The nicotine , carbon monoxide, and numerous other poisons you inhale from a cigarette are carried through your bloodstream and go directly to your baby.
The smoke that burns off the end of a cigarette or cigar actually contains more harmful substances (tar, carbon monoxide, nicotine, and others) than the smoke inhaled by the smoker.If you are regularly exposed to secondhand smoke, you increase your and your baby's risk of developing lung cancer, heart disease, allergies, asthma, and other health problems.