"Smoking during pregnancy is the single most preventable cause of illness and death among mothers and infants. Compared with women who do not smoke, women who smoke during pregnancy are about twice as likely to experience complications such as premature rupture of membranes and placental abruption during pregnancy. Babies born to women who smoke during pregnancy  have about 30% higher odds of being born prematurely. They are also more likely to be born with low birth weight (less than 2500 grams or 5.5 pounds), increasing their risk for illness or death. This difference is so profound that infants of mothers who smoked during pregnancy weigh an average of 200 grams less than infants born to women who did not smoke. The babies exposed to tobacco during pregnancy are 1.4 to 3.0 times more likely to die of Sudden Infant Death Syndrome (SIDS)." (1).