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The proposed randomized trial aims to form two cohorts from a population of anemic women seeking contraception in Nairobi, Kenya: LNG IUS users and users of oral contraceptives. Women aged 18-44 with back-to-back hemoglobin measures between 87 and 126 g/L will be recruited and followed prospectively for 18 months. Every six months after baseline, participants will have blood drawn to measure changes in hemoglobin and serum ferritin; LNG IUS users’ changes will be compared to OC-users. C-reactive protein, acid glycoprotein, and other parameters will be measured to fully isolate and explain possible reductions in anemia and rises in serum ferritin. Data on self-perceived changes in menstruation levels, satisfaction with the contraceptives, and dietary/supplement will be recorded.

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