Maternal obesity is associated with congenital anomalies of the kidney and urinary tract in offspring

Background Congenital abnormalities of the kidney and urinary tract (CAKUT) are diagnosed in up to 1 % of pregnancies and account for 20–30 % of the abnormalities identified in the prenatal period. In previous studies, maternal obesity has been associated with congenital malformations in offspring. Our aim was to evaluate the association between maternal obesity [body mass index (BMI) ≥ 30 kg/m2] and CAKUT in offspring.