Drinking alcohol and consuming excessive amounts of caffeine are particularly dangerous during the 1st trimester, when your baby's organs are developing and the risk of miscarriage is higher. Once you've passed that supercritical time and are in your 2nd trimester, don't pop open a beer or go coffee crazy. Alcohol is still off limits, as it is throughout pregnancy. This is because the alcohol that you drink goes right through the placenta to your baby. Researchers don't know how much -- or how little -- alcohol it takes to harm a fetus, so the safest thing to do is to avoid it completely. As for caffeine, continue to limit yourself to about 300 mg of caffeine daily, or the amount in a cup or two of coffee.
Originally published in You & Your Baby: Pregnancy.
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