Effects of Levonorgestrel-Releasing Intrauterine Device Therapy on Ovarian Reserve in Menorrhagia

Objective This study aimed to investigate the effects of levonorgestrel-releasing intrauterine device (LNG-IUD) treatment on ovarian reserve in women of reproductive age diagnosed with menorrhagia. Methods This was a prospective controlled trial involving 50 women with menorrhagia and a control group comprising age-matched 50 healthy women. Women who satisfied the LNG group criteria underwent an endometrial pipelle biopsy and LNG-IUD insertion. Ovarian reserve tests were performed prior to and six months after LNG-IUD insertion in the LNG group cases. Results Follicle-stimulating hormone (FSH), luteinizing hormone (LH), estradiol (E2), anti-Müllerian hormone (AMH), endometrial thickness (ET), total antral follicle count (AFC), and mean ovarian volume values before LNG-IUD insertion did not differ between the LNG and control groups. When the final measurements were compared, FSH, AMH, total AFC, and average ovarian volume increased (p=0.05, 0.046, 0.022, and 0.022, respectively), E2 and ET decreased (p=0.034 and 0.001, respectively) in the LNG group, while LH did not differ significantly between the groups (p=0.71). Conclusion We observed that LNG-IUD use effectively improves fertility capacity. In this study, LNG-IUD use in reproductive-age women diagnosed with menorrhagia decreased E2 levels, did not change LH levels, and increased FSH, AFC, and AMH levels.