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Glucose, cholesterol and triglyceride levels in "normal" women during one year of use of an inert intrauterine device.

Metabolic studies were done on 41 women who were using an inert plastic intrauterine device (IUD). They each had a three-hour oral glucose tolerance test done after the IUD was inserted and then again one year later. The fasting plasma triglyceride and cholesterol levels were also measured. The fasting blood glucose value was slightly elevated after one year (82.4 +/- SEM 1.3 vs 89.3 +/- SEM 2.2 mg/dl) of IUD use, but all of the other glucose and lipid levels were unchanged. These data provide baseline studies for comparison of the metabolic effects of other contraceptive agents studied over one year's time period.