Eating (Well) for Two (cont.)

As for caffeine, studies haven't offered reliable evidence linking it to cancer, miscarriage or birth defects, but since caffeine can constrict blood vessels, increase heart rate and cause your body to lose water, doctors and midwives still recommend switching to decaf or cutting back to no more than 300 milligrams a day. That's the equivalent of three 8-ounce cups of coffee. Don't forget that other substances contain caffeine: A 12-ounce can of cola contains almost 50 milligrams of caffeine, and one ounce of dark chocolate has 20.

"Nutrition during pregnancy is really a matter of balance," says nutritionist Anne Dubner. "If you would usually have a sandwich for lunch, then you may want to add a glass of milk or cup of yogurt, or put a little extra meat inside." Who knows -- the eating habits you develop might be a welcome change. "During pregnancy you should eat better than you ever have," Dubner says. "Then just hold that thought -- keep it going for the rest of your life."

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