It was found that maternal obesity leads to congenital defects in children, increased perinatal mortality, shoulder dystocia, fetal macrosomia and stillbirth. During pregnancy, complications such as gestational diabetes, infertility, miscarriage, thromboembolic diseases, preeclampsia, gestational hypertension and complications at birth (premature birth, higher likelihood of C-section birth, induced labour, prolonged labour, greater post-partum haemorrhage). After birth, obese women suffer of infectious complications and failure of lactation more frequently.