• Sven M Carlsen, Kjell A Salvesen, Eszter Vanky, and Kristian J Fougner.
• Institutt for samfunnsmedisin, Norges teknisk-naturvitenskapelige universitet, Medisinsk teknisk forskningssenter, 7489 Trondheim. sven.carlsen@ntnu.no
• Tidsskr. Nor. Laegeforen. 2005 Oct 6; 125 (19): 2619-21.

BackgroundPolycystic ovary syndrome is the most common endocrine condition in women of fertile age. The syndrome is associated with insulin resistance, hyperinsulinaemia and diabetes. This paper reviews the association between polycystic ovary syndrome and diabetes; implications for clinical practice are suggested.Material And MethodsThe review is based on Medline searches, our own studies, and clinical experience.ResultsPolycystic ovary syndrome is present in one third of women with type 1 diabetes and in almost half of all women with type 2 diabetes. In women with polycystic ovary syndrome, the prevalence of type 2 diabetes is considerably increased and gestational diabetes may occur in as many as 40%. In women with previous gestational diabetes, the risk of type 2 diabetes as well as polycystic ovarian syndrome is increased.InterpretationWomen with polycystic ovary syndrome are at increased risk of developing type 2 diabetes and gestational diabetes and should be followed up accordingly. Pregnant women with polycystic ovary syndrome should have an oral glucose tolerance test as soon as the pregnancy has been confirmed. The procedure should be repeated at gestational weeks 20 and 32. Treatment with metformin should be initiated in women with type 2 diabetes who want to conceive. For the same reason metformin may also be initiated in women with type 1 diabetes.

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