Pregnant? Avoid caffeine, new study says

A study by the American Journal of Obstetrics and Gynecology concluded that pregnant women should not consume any caffeine since it can increase the risk of miscarriage.

Before this study was published Health Canada's recommendations were not to consume more than 300 mg daily.
The study was conducted over a two-year period with 1,063 pregnant women. Those who drank at least two cups of coffee a day or five cans of soda (200 mg of caffeine) had twice the chance of miscarriage than those didn’t consume any caffeine. Those whose consumption of caffeine was lower than 200mg a day still had a 40% greater chance of miscarriage.
Pregnant women should avoid caffeine, which is found in tea, sodas, and chocolate as well as coffee.