News

6th June 2005

Obesity linked to birth complications

Obese women have a higher risk of complications during birth according to a new study.

The British Journal of Obstetrics and Gynaecology study looked at 8,350 first time mothers, a third of whom were obese.

They found that those who were obese faced a higher risk of being overdue, having their labour induced or a Caesarean section.

Experts said the study raised concerns, and advised women to lose weight before becoming pregnant.

Being obese is classed as having a body mass index (BMI) score of over 30.

BMI is calculated by dividing a person's weight in kilograms by the square of their height in metres.

The incidence of pregnancies involving obese women has more than doubled in the past 10 years.

The study also found that more babies born to obese women required admission to the neonatal unit and were more likely to require assistance with feeding and maintaining body temperature.

Dr Talakere Usha Kiran, who led the study, said it was not clear why obese women had this increased risk.

"We have found the problem. Now we need to go about identifying a solution."

But she said the risk of complications could be reduced if it could be discovered why the women went past their delivery date - and this could be prevented.

"When women are overdue, they are likely to be induced or to have to undergo a Caesarean."

Mr Peter Bowen-Simpkins, spokesman for the Royal College of Obstetricians and Gynaecologists, said, "Women with a BMI of over 30 were more at risk of problems both during labour and afterwards and should be regarded as high risk.

"Babies are more difficult to deliver; the women are more likely to have a Caesarean - and these are more difficult because of the challenge of cutting through the abdominal fat."

Mr Bowen-Simpkins said women should lose weight before they tried to become pregnant.

Not only did obesity raise the risk of birthing complications, it also reduced the risk of becoming pregnant in the first place.

He said: "It's a good idea all round."

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