McKesson Clinical Reference Systems: Women's Health Advisor 2002.2
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Smoking During Pregnancy and Around Infants and Children

It is not healthy for any person to smoke. If you are pregnant and you smoke during your pregnancy, you may harm your baby as well as yourself.

Your lungs absorb the chemicals in cigarette smoke. Some of these chemicals cause the vessels supplying blood to the uterus to become narrower. This means the baby gets less oxygen and food from the blood. As a result, the baby has a greater risk of low birth weight. The baby also has a greater chance of being born too early. Babies who are both underweight and premature have more problems during and after delivery. Recent research also shows that a powerful cancer-causing chemical called NNK is transmitted to the baby when the mother smokes. If you smoke, you are more likely to have a miscarriage, a child with disabilities, a stillborn, or a tubal pregnancy outside the uterus.

The risk of stillbirth or sudden infant death syndrome (SIDS) during the first month after birth increases if you smoke. Compared to a nonsmoker, the risk increases 20% if you smoke up to one pack of cigarettes a day during pregnancy. The risk is 35% greater if you smoke more than one pack a day.

The smoke from cigarettes, cigars, and pipes is unhealthy for a baby after birth. Infants and children who are exposed to smoke (passive smoking) are more likely to have chronic coughs, bronchitis, and ear infections.

If you are planning to become pregnant, you should quit smoking before you try to conceive. If you are already pregnant, you should quit smoking as soon as possible. If you are not able to quit completely, try to cut down to fewer than 5 cigarettes a day. Cutting down or stopping smoking during pregnancy reduces the risks. If you stop smoking early in pregnancy, the risks for your baby are about the same as for women who are nonsmokers.

And remember that family members should not smoke around infants and children.


Developed by Phyllis G. Cooper, R.N., M.N., and McKesson Clinical Reference Systems.
Published by McKesson Clinical Reference Systems.

This content is reviewed periodically and is subject to change as new health information becomes available. The information is intended to inform and educate and is not a replacement for medical evaluation, advice, diagnosis or treatment by a healthcare professional.

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