A statistical analysis of US mothers-to-be shows that babies conceived in May are around 10% more likely to be born a few days prematurely.
Why would that be? Well, there could be a link to influenza May-conceived babies reach late gestation at the height of the US flu season. Flu may, scientists suggest, trigger a slightly early labour.
It's an interesting finding, but I don't think parents should worry too much about the date of conception. Taking good care of your health during pregnancy is far more important.