Topping tonight's Health Headlines, why do some pregnant women go into early labor? Well, it could have something to do with depression.
Those women with serious depression were twice as likely to deliver a baby pre-term than those who were not depressed and the more severe the depression, the greater the risk they wouldn't make it to their 37th week.
The authors say depression during pregnancy could interfere with placental hormones that contribute to having a healthy, full-term child.
Researchers screened women for depression about 10 weeks into their pregnancies and more than 40% said they had depression symptoms and half of those women reported severe symptoms.
