New research suggests a pregnant mother sleeping on her back during late pregnancy may cause problems for the fetus, reports Science Daily.

A pregnant mother sleeping on her back during late pregnancy may cause problems for the fetus, according to new research published in The Journal of Physiology. This is the first study to monitor unborn babies overnight and at the same time record the mother’s position during sleep.

The sleep position of women in late pregnancy has been shown to be related to an increased risk of late stillbirth (after 28 weeks gestation).

Researchers at the University of Auckland investigated sleep position of pregnant women by setting up an infrared video camera to record their position as they slept. They also continuous recorded the heart rate of the women and fetus overnight using an ECG device.

Read more at sciencedaily.com.