Some studies have looked at the health risks of coffee. In February 2003, there was a study in Denmark of 18,478 women to find out if coffee had an effect on pregnancy and birth. It was found that if a woman drank between four and seven cups of coffee a day, it did not seem to make a big change to the number of babies that were born dead, (stillborn). But the women in the study who drank eight or more cups of coffee a day had three times as much chance of having a stillborn baby.