Overweight pregnancy increases risk of birth defects, study says

( CNN) Risks of major birth defect increased in step with the severity of a mother’s obesity or overweight, a study written Wednesday in the BMJ medical periodical obtain.

Based on these results, women should be encouraged to adopt a health lifestyle and be at a normal organization weight before thought, supposed researchers is presided over by Martina Persson, a researcher in the clinical epidemiology force at Karolinska Institutet in Stockholm, Sweden.

The study’s finds are not entirely new, but “expand on previous knowledge, ” Persson said in an email. Past learns have shown high risk of congenital malformations among obese fathers.