Using tobacco products while pregnant can negatively affect your unborn babies’ health.
Many toxins found in cigarette smoke are passed to the baby through the placenta. This can deprive the baby of the food and oxygen it needs to develop properly. As a result, babies of mothers who smoke are often underweight. These babies are more likely to need special care and therefore may have to stay longer in the hospital. Some may die at birth or within the first year. Other health risks involved with smoking while pregnant include miscarriage, still births and premature births. According to the American Lung Association, "smoking during pregnancy is estimated to account for 20-30 percent of low-birth weight babies, up to 14 percent of preterm deliveries and some 10 percent percent of all infant deaths."
Some of the effects of smoking while pregnant may not show up at birth, but may begin as the baby develops. Sudden Infant Death (SIDS) is more common among babies of mothers who smoked while pregnant. Smoking during and after pregnancy may lead to asthma in children. Children of mothers who smoked while pregnant may also have learning difficulties and/or behavioral problems.
If you are pregnant, quitting will greatly improve your health AND your chances of having a healthy baby.