It doesn't help you or your baby if you wear yourself out and make complications of pregnancy worse. It is also found in some medications, particularly diet aids and headache medications. To date, no benefits to you or your unborn baby have been found with the use of caffeine. When cutting down on caffeine during pregnancy, read labels. Some researchers believe there is an association between caffeine use and miscarriage or premature labor.
Caffeine crosses the placenta to the baby.
It can affect calcium metabolism of the mother and the baby. Your caffeine consumption may also increase the chances of breathing problems in your newborn. Caffeine passes to breast milk, which can cause irritability and sleeplessness in a breastfed baby. An infant metabolizes caffeine slower than an adult, and caffeine can collect in the infant. Effects of caffeine on you during pregnancy may include irritability, sleeplessness and jitters.