Women should not drink coffee during their pregnancy. This advice is now backed up by results from a resent Danish study showing that women who drink large amounts of coffee during pregnancy double their risk of stillbirth compared to women who drink no coffee at all.
In a prospective study of 18,478 (singleton) pregnancies, a team of Danish researchers has evaluated the risk of stillbirth and infant death associated with coffee consumption during pregnancy. They found no risk by drinking 1- 4 cups of coffee a day, while consumption of larger amounts of coffee increase the risk of stillbirth, but not of infant death.
An article on the study by Danish senior researcher Kirsten Wisborg is published in the British Medical Journal vol. 326, February 22, 2003.