A study looked into whether maternal psychological distress during pregnancy might affect fetal lung development and lead to childhood asthma.
A study done in the Netherlands studied almost 5000 children and assessed maternal and paternal psychological distress during the 2nd trimester and 3 years after delivery. Wheezing was assessed annually between 1-4 years.
Mothers with psycholgical distress during pregnancy had increased odds of wheezing in their children. There were more wheezing episodes and physician diagnosed wheezing at 6 years of age. Paternal distress during pregnancy, and paternal and maternal distress after delivery were not associated with wheezing.
The conclusion of this study basically states, maternal psychological distress during pregnancy leads to increased chances of wheezing during the first 6 years of life in children. This suggests a role in intrauterine programming of maternal distress leading to respiratory morbidity.
The take home message is to relax and not to stress yourself out during pregnancy, enjoy the process! Let your partner worry and stress, because it has no impact on the lung development of the fetus.