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Pregnancy nutrition: Foods to avoid during pregnancy

Avoid unwashed fruits and vegetables

To eliminate any harmful bacteria, thoroughly wash all raw fruits and vegetables and cut away damaged portions. Avoid raw sprouts of any kind — including alfalfa, clover, radish and mung bean — which also may contain disease-causing bacteria.

Avoid large quantities of liver

Liver is OK during pregnancy, but don't overdo it. Liver is high in vitamin A, and too much vitamin A may cause birth defects.

Avoid excess caffeine

Caffeine can cross the placenta and affect your baby's heart rate. Some studies suggest that drinking too much caffeine may be associated with a small decrease in birth weight or an increased risk of miscarriage and stillbirth. In fact, a large 2008 study suggests that 200 milligrams (mg) of caffeine a day — about a 12-ounce cup (354 milliliters) of brewed coffee — during pregnancy may slow fetal growth.

Because of the potential effects on your developing baby, your health care provider may recommend limiting the amount of caffeine in your diet to less than 200 mg a day during pregnancy.

Avoid herbal tea

Although herbal tea may be soothing, avoid it unless your health care provider says it's OK — even the types of herbal tea marketed specifically to pregnant women. There's little data on the effects of specific herbs on developing babies. And large amounts of some herbal teas, such as red raspberry leaf, may cause contractions.

Avoid alcohol

One drink isn't likely to hurt your baby, but no level of alcohol has been proved safe during pregnancy. The safest bet is to avoid alcohol entirely.

Consider the risks. Mothers who drink alcohol have a higher risk of miscarriage and stillbirth. Too much alcohol during pregnancy may result in fetal alcohol syndrome, which can cause facial deformities, heart problems, low birth weight and mental retardation. Even moderate drinking can impact your baby's brain development.

If you're concerned because you drank alcohol before you knew you were pregnant or you think you need help to stop drinking, talk with your health care provider.

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References
  1. Food don'ts. The National Women's Health Information Center. http://www.4women.gov/pregnancy/mom-to-be-tools/pregnancy_food_donts.pdf. Accessed March 11, 2009.
  2. Fish facts. The National Women's Health Information Center. http://www.4women.gov/pregnancy/mom-to-be-tools/fish-facts.pdf. Accessed March 11, 2009.
  3. Hibbeln J, et al. Maternal seafood consumption in pregnancy and neurodevelopmental outcomes in childhood (ALSPAC study): An observational cohort study. The Lancet. 2007;369:578.
  4. What you need to know about mercury in fish and shellfish. U.S. Environmental Protection Agency. http://www.epa.gov/waterscience/fish/advice/. Accessed March 12, 2009.
  5. FDA/EPA advisory on seafood consumption still current. U.S. Food and Drug Administration. http://www.fda.gov/bbs/topics/NEWS/2006/NEW01382.html. Accessed March 12, 2009.
  6. Fresh and frozen seafood: Selecting and serving it safely. U.S. Food and Drug Administration. http://www.cfsan.fda.gov/~acrobat/seafsafe.pdf. Accessed March 12, 2009.
  7. Listeriosis. U.S. Centers for Disease Control and Prevention. http://www.cdc.gov/nczved/dfbmd/disease_listing/listeriosis_gi.html. Accessed March 12, 2009.
  8. Food safety for moms-to-be. U.S. Food and Drug Administration. http://www.cfsan.fda.gov/~pregnant/safemea.html. Accessed March 12, 2009.
  9. Caffeine in pregnancy. March of Dimes. http://www.marchofdimes.com/professionals/14332_1148.asp. Accessed March 12, 2009.
  10. Caffeine and pregnancy. Organization of Teratology Information Specialists. http://otispregnancy.org/pdf/caffeine.pdf. Accessed March 12, 2009.  
  11. Red raspberry. Natural Medicines Comprehensive Database. http://www.naturaldatabase.com/(S(xd4acwvqrberie55kn2hidrc))/nd/Search.aspx?cs=MAYO&s=ND&pt=100&id=309&ds=&name=RED+RASPBERRY. Accessed March 12, 2009.
  12. Weng X, et al. Maternal caffeine consumption during pregnancy and the risk of miscarriage: A prospective cohort study. American Journal of Obstetrics and Gynecology. American Journal of Obstetrics and Gynecology. 2008;198:279.
  13. Care study group. Maternal caffeine intake during pregnancy and risk of fetal growth restriction: A large prospective observational study. British Medical Journal. 2008;337:a2332.
  14. Food-borne risks in pregnancy. March of Dimes. http://www.marchofdimes.com/printableArticles/14332_1152.asp. Accessed March 12, 2009.
  15. Dietary supplement fact sheet: Vitamin A and carotenoids. National Institutes of Health. http://ods.od.nih.gov/factsheets/vitamina.asp. Accessed March 12, 2009.
  16. Drinking alcohol during pregnancy. March of Dimes. http://www.marchofdimes.com/professionals/14332_1170.asp. Accessed March 13, 2009.
  17. Harms RW (expert opinion). Mayo Clinic, Rochester, Minn. March 18, 2009.

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May 30, 2009

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