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Alcohol, Smoking, and Caffeine During Pregnancy

Alcohol, Smoking, and Caffeine During Pregnancy

Pregnant women are strongly urged not to drink alcohol or smoke during pregnancy. These substances can cause many complications during pregnancy, have damaging effects on developing fetuses, and may contribute to other medical problems as the child grows.

When a pregnant woman drinks alcohol, it travels through her bloodstream and into the fetus. That means that when mom has a glass of wine, her baby has a glass of wine, too. In addition, drinking alcohol can lead you to eat less, thus losing sources of nutrients.

Alcohol consumption during pregnancy can lead to fetal alcohol syndrome (FAS). FAS includes mental and physical birth defects and growth problems associated with the mother's high levels of alcohol use during pregnancy.

A milder syndrome called fetal alcohol effect (FAE) is characterized by behavioral problems and developmental delays.

The risk of harm from drinking alcohol during pregnancy is closely related. The more you drink, the higher the risk of problems. Since there is no amount of alcohol that is considered "safe," pregnant women and women trying to get pregnant should not drink alcohol at all.

The same rule should be followed for smoking. Smoking makes it harder to get pregnant, is dangerous to your baby during and after pregnancy, and makes it harder to recover from delivery. Smoking deprives your eggs, embryo, and fetus of oxygen. This can lead to accelerated ovarian aging, a higher risk of miscarriage, and low birth weight babies. Once born, there is a higher likelihood of the child having developmental issues like mental and behavioral problems.

Caffeine can also affect your growing baby. Small amounts of caffeine during pregnancy are OK. But heavy doses are strongly discouraged. Caffeine, like alcohol, travels through your bloodstream to the placenta and can have a negative effect on your baby. Since caffeine is a stimulant, it increases your heart rate and metabolism -- both of which directly affect the baby. The Academy of Nutrition and Dietetics recommends keeping your intake of caffeine below 300 milligrams per day. This is about one or two servings of coffee, tea, or other caffeine-containing beverages. Beverages that contain caffeine include:

  • Coffee
  • Teas (green and black)
  • Some carbonated beverages such as colas and energy drinks

Keep in mind that, for some pregnant women, caffeine may cause nausea and heartburn.




Review Date: 12/9/2012
Reviewed By: Irina Burd, MD, PhD, Maternal Fetal Medicine, Johns Hopkins University, Baltimore, MD. Review provided by VeriMed Healthcare Network. Also reviewed by David Zieve, MD, MHA, Isla Ogilvie, PhD, and the A.D.A.M. Editorial team. A.D.A.M. Editorial Update: 06/11/2014.
The information provided herein should not be used during any medical emergency or for the diagnosis or treatment of any medical condition. A licensed medical professional should be consulted for diagnosis and treatment of any and all medical conditions. Call 911 for all medical emergencies. Links to other sites are provided for information only -- they do not constitute endorsements of those other sites. © 1997- A.D.A.M., Inc. Any duplication or distribution of the information contained herein is strictly prohibited.
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