Pregnant women who sleep on their back during their third trimester ‘give birth to babies who weigh 5oz less because the position restricts blood flow to the womb’

Pregnant women who sleep on their back during their third trimester may be more likely to have a baby with a low birth-weight, research suggests.

Scientists from the University of Auckland asked more than 1,700 women who were at least 28 weeks pregnant about their sleeping position.

They found the average weight of newborns whose mothers nodded off on their back was 7lbs 8oz (3.41kg).

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