Class C diabetes is diabetes that began between the ages of 10 – 19 and has lasted a duration of 10-19 years. Women whose diabetes had set in before the age of 20 years of age have a higher incidence of infants with malformations that were fatal than women who developed diabetes at an older age, according to a study found on oxfordjournals.org.

The placentae from mothers with Class C diabetes were compared in one study with a normal group of placentae. The placentae from the Class C diabetes patients were divided into two groups based on growth characteristics and the neonatal out comes of the infants. The placentae of both of these groups were heavier than the placentae of the normal mothers. They were also found to have a relative increase in surface are. The results of the study suggested that the placental function in diabetics were probably not …