More than one third of all women who give birth to children in Sweden is overweight or suffering from obesity.

A new study has been performed at Karolinska institutet to further examine the relationship between weight gain and complications of the newborn child, writes the Swedish newspaper svenska Dagbladet.

the Results show that the risk of including syrebristrelaterade damage in newborn babies increase more in the cases where the mother at her first pregnancy has a normal weight, a BMI under 25 , then go up in weight to face the other.

Of mothers who are already overweight before the first pregnancy and is increasing in importance in the face of the other, the risk is lower.

"Our main message is that one should try to aim for a normal weight before each pregnancy," says researcher Martina Persson to the newspaper.

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