During pregnancy you may want to give up or at least cut back on coffee and switch to pick-me-ups that don't cross the placenta. The concerns about caffeine in pregnancy stem from research that showed the offspring of pregnant animals given caffeine had a higher incidence of malformations. This statistical finding has yet to be proven in humans, but to be on the safe side, the U.S. Food and Drug Administration (FDA), advises pregnant women to eliminate or limit the consumption of products containing caffeine, including coffee, colas, tea, cocoa, chocolate, and some over-the- counter remedies. More recent research suggests that caffeine use during pregnancy may cause more problems than originally suggested by the early animal studies. Caffeine has now been implicated in miscarriages and low birth weight.
The harmful effects of caffeine revealed in these studies were the result of high doses of caffeine (the equivalent of 6 to 10 cups of coffee a day), and these studies are not considered definitive by any means. At this writing, there is no hard evidence that drinking a couple of cups of coffee a day while pregnant is harmful to the developing baby, but caffeine does stimulate an increased heart rate and metabolic rate in babies, just as it does in adults. Furthermore, caffeine may remain in the baby's bloodstream longer and at higher levels, because baby's immature liver cannot get rid of the caffeine as quickly as can mother's.
If your body is used to a daily caffeine lift, here are some ways to wean yourself (and your baby) off this chemical jolt onto a more natural pick-me-up.