Abstract
Background: Follow-up visits of patients recovering from anorexia nervosa (AN) have shown that some patients do not resume menstrual cycles despite returning to the normal weight for their age and height. Aim: To verify whether leptin, insulin-like growth factor 1 (IGF-1) or another hormonal marker could be a good predictor of the return of menses. Patients and Methods: This prospective study included female adolescents diagnosed with AN or eating disorders not otherwise specified (EDNOS) and who were being treated in an ambulatory care unit during nutritional recovery. Body mass index and leptin, luteinizing hormone, estradiol and IGF-1 levels of these patients were evaluated. Blood samples were collected in the 1st (T1), 5th (T2), 10th (T3), 15th (T4) and 20th (T5) weeks of treatment. The hormone levels during nutritional recovery and at the time of the resumption of menses were analyzed. Results: The hormonal profiles improved after nutritional recovery, with IGF-1 correlating the most with the resumption of menses and nutritional recovery (p = 0.0001). At the resumption of menstruation, the patients showed IGF-1 levels >342.8 ng/ml. Conclusion: IGF-1 was the best predictor of the return of menses in female adolescents with AN or EDNOS.
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