“…Diabetes mellitus is said to be associated with a marked increase in the incidence of malformations among viable births (Day and Insley, 1976;Watkins, 1982) and with certain pathological lesions in the palcenta that individually are nonspecific but together are a reasonable indicator of maternal disease (Daria-Haust, 1981). However, the role of diabetes in spontaneous abortion is disputed (Goldman and Resnik, 1974;Crane and Wahl, 1981;Beral eta!., 1984). Because of the high natural wastage in the absence of diabetes, a small increase due to its effect on the conceptus may easily escape detection.…”