Stress in early pregnancy can lead to shorter pregnancies and fewer baby boys

Stress in early pregnancy can lead to shorter pregnancies and fewer baby boys: Stress in the second and third months of pregnancy can shorten pregnancies, increase the risk of pre-term births and may affect the ratio of boys to girls being born, leading to a decline in male babies. These are the conclusions of a study that investigated the effect on pregnant women of the stress caused by the 2005 Tarapaca earthquake in Chile.