As reported by the Generalitat, the Clinical Hospital of Valencia has done a study on the risks of smoking during pregnancy, indicating that this addiction doubles the chance of children dying at birth or during the first year of life.

According to that study, smoking is more likely to appear diseases like sudden infant death. However, the study authors have found that if women stop smoking early in pregnancy excess risk disappears.

For Dr. Carrion, "smoking, especially in pregnant women is a major problem because it doubles the likelihood that children may be stillborn or die during the first year of life."

According to the study, smoking during pregnancy is responsible for at least 750 deaths in Spain from late fetal deaths and deaths in the first year of life. In the case of Valencia, 75 deaths occur annually from these causes.