Gestational diabetes (i.e. diabetes diagnosed during pregnancy) has important implications for maternal and foetal well-being. This paper presents an ethnographic study of gestational diabetes, an unexpected, potentially life-threatening illness diagnosed during the second half of pregnancy. While previous research has conceptualised gestational diabetes as producing few consequences since it commonly disappears after delivery, this study explores the meaning women attach to the disorder. It found that gestational diabetes had a profound effect on the respondents, resulting in fear, depression and anxiety. The respondents' imagery of diabetes as a debilitating disease concomitant with blindness, amputations, and prematxire death generated increased anxiety throughout pregnancy and six-weeks postpartimi. The personal disruption in complying with the diabetic regimen as well as health care provider transactions exaggerated the unique stress of a 'normal' pregnancy. We suggest that a strictly medical view of gestational diabetes minimises its broader psychosocial significance and recommend efTective provider-patient interactions with 'high-risk' pregnant women.