Pregnant women are strongly urged not to drink alcohol during pregnancy.
Drinking alcohol while pregnant has been shown to cause harm to a baby as it develops in the womb. Alcohol used during pregnancy may also lead to long-term medical problems and birth defects.
Drinking alcohol during pregnancy
When a pregnant woman drinks alcohol, the alcohol travels through her blood and into the baby's blood, tissues, and organs. Alcohol breaks down much more slowly in the baby's body than in an adult. That means the baby's blood alcohol level remains increased longer than the mother's. This can harm the baby and can sometimes lead to lifelong damage.
DANGERS OF ALCOHOL DURING PREGNANCY
Drinking a lot of alcohol during pregnancy can lead to a group of defects in the baby known as fetal alcohol syndrome. Symptoms can include:
Behavior and attention problems
Changes in the shape of the face
Poor growth before and after birth
Poor muscle tone and problems with movement and balance
Problems with thinking and speech
These medical problems are lifelong and can range from mild to severe.
Complications seen in the infant may include:
Miscarriage or stillbirth
HOW MUCH ALCOHOL IS SAFE?
There is no known "safe" amount of alcohol use during pregnancy. Alcohol use appears to be the most harmful during the first 3 months of pregnancy; however, drinking alcohol anytime during pregnancy can be harmful.
Alcohol includes beer, wine, wine coolers, and liquor.
One drink is defined as:
12 oz of beer
5 oz of wine
1.5 oz of liquor
How much you drink is just as important as how often you drink.
Even if you don't drink often, drinking a large amount at one time can harm the baby.
Binge drinking (5 or more drinks on one sitting) greatly increases a baby's risk of alcohol-related damage.
Drinking moderate amounts of alcohol when pregnant may lead to miscarriage.
Heavy drinkers (those who drink more than 2 alcoholic beverages a day) are at greater risk of giving birth to a child with fetal alcohol syndrome.
The more you drink, the more you raise your baby's risk for harm.
DO NOT DRINK DURING PREGNANCY
Women who are pregnant or who are trying to get pregnant should avoid drinking any amount of alcohol. The only way to prevent fetal alcohol syndrome is to not drink alcohol during pregnancy.
If you did not know you were pregnant and drank alcohol, stop drinking as soon as you find out. The sooner you stop drinking alcohol, the healthier your baby will be.
Choose non-alcoholic versions of beverages you like.
If you cannot control your drinking, avoid being around other people who are using alcohol.
Bandstra ES, Accornero VH. Infants of substance-abusing mothers. In: Martin RJ, Fanaroff AA, Walsh MC, eds. Fanaroff and Martin's Neonatal-Perinatal Medicine. 9th ed. St. Louis, Mo: Mosby Elsevier; 2010:chap 38.
Wallen LD, Gleason CA. Perinatal substance abuse. In: Gleason CA, Devaskar SU. Avery's Diseases of the Newborn. 9th ed. Philadelphia, Pa: Elsevier Saunders; 2011:chap 12.
Bertrand J, Floyd LL, Weber MK. Guidelines for identifying and referring persons with fetal alcohol syndrome. MMWR Recomm Rep. 2005 Oct 28;54(RR-11):1-14.
Cunnigham FG, Leveno KL, Bloom SL, et al. Teratology and medications that affect the fetus. In: Cunnigham FG, Leveno KL, Bloom SL, et al, eds. Williams Obstetrics. 22nd ed. New York, NY: McGraw-Hill; 2005:chap 14.
Committee on Health Care for Underserved Women. Committee Opinion No. 496: At-risk drinking and alcohol dependence: Obstetric andgynecologic implications. Obstet Gynecol 2011;118:383–388.
Susan Storck, MD, FACOG, Chief, Eastside Department of Obstetrics and Gynecology, Group Health Cooperative of Puget Sound, Bellevue, Washington; Clinical Teaching Faculty, Department of Obstetrics and Gynecology, University of Washington School of Medicine. Also reviewed by David Zieve, MD, MHA, Isla Ogilvie, PhD, and the A.D.A.M. Editorial team.