Historically, birth weight > 4-4,5kg have been used as definition, but also estimated weight >90th percentile have been used including the gestational age and sometimes also gender within the definition. The ACOG criteria has been criticized and thus this should be commented at least in the discussion part of the text. The paper try to find the methods how to identify timely in first trimester pregnant women with possible macrosomic newborns and make possible interventions to hinder the development of macrosomia. Indeed, identification was the main focus, not preventive methods.