Obesity during pregnancy is linked with increased maternal and fetal risks, which is inversely interrelated with the severity level of obesity. Other comorbidities are mutual (diabetes mellitus, hypertensive disorders, etc.) and subsidize to an even amplified risk. Maternal obesity during pregnancy subsidizes also to offspring obesity and noncommunicable diseases later in life in a vicious cycle. Managing these problems, and potentially reducing their risk, can pose a challenge in obstetric care. It is important to provide preconception nutritional and exercise care, and guidance during pregnancy and post pregnancy for appropriate weight loss.