Q. Can too much caffeine make it harder to conceive?
A. The jury is still out. In three studies following a total of 5,000 women who consumed more than 300 milligrams (mg) of caffeine daily—about three cups of coffee—all showed that it took slightly longer for the women to conceive. But another study of 2,800 women who drank about two cups of coffee a day showed no difference in conception times. What many people don’t realize, though, is that caffeine is a drug. So just as you’d stop or cut back on medications when you’re trying to get pregnant, you should consider doing the same with caffeine, especially since it turns up in tea, cola, chocolate, and many energy drinks as well. Too much can cause side effects like stomach upset, rapid heartbeat, anxiety, irritability, and difficulty sleeping.