Top 6 Common Birth Defects Genetic defects e.g. Down syndrome: 6,916 babies per year Mouth/facial defects (cleft lip): 6, 776 babies per year Heart defects: 6, 527 babies per year MuscUloskeletal defects(including arm/eg defects): 5, 799 babies per year Stomach/intestinal defects: 2, 883 babies per year Eye defects: 834 babies per year CDC, Morbidity and Mortality Weekly Report, Jan. 6, 2006; vol 54: pp 1301-1305Top 6 Common Birth Defects  Genetic defects (e.g. Down syndrome): 6,916 babies per year  Mouth/facial defects (cleft lip): 6,776 babies per year  Heart defects: 6,527 babies per year  Musculoskeletal defects (including arm/leg defects): 5,799 babies per year  Stomach/intestinal defects: 2,883 babies per year  Eye defects: 834 babies per year CDC, Morbidity and Mortality Weekly Report, Jan. 6, 2006; vol 54: pp 1301-1305