Obese mothers 'risk spina bifida'

"Mothers-to-be who are obese increase their odds of having a baby with abnormalities including spina bifida, researchers say. Their analysis of data from 39 studies found obese women were more than twice as likely to have a baby with spina bifida or another neural tube defect. The risk of heart defects and cleft lip was also raised, the Journal of the American Medical Association says. Up to a fifth of pregnant mothers in the UK are classed as obese" - BBC