An excess caffeine intake may lead to low birth weight and miscarriage. Caffeine may affect a baby’s growth as it can constrict blood vessels and limit the nutrient that are supplies to baby. Also, caffeine inhibits iron absorption. The low iron stores at the fetal stage leads to a higher risk of iron deficiency during infant development. Yet, pregnant mothers need not avoid caffeine totally. The American Dietetic Association suggests 300mg daily (equals to 3 cups of coffee) as the upper limit of caffeine intake for pregnant women. Other sources of Caffeine include tea, soda, chocolates and energy drink!