Objective: To determine whether cognitive behavior therapy (CBT), which we had shown in a previous study to restore ovarian function in women with functional hypothalamic amenorrhea (FHA), could also ameliorate hypercortisolemia and improve other neuroendocrine and metabolic concomitants of in FHA. Design: Randomized controlled trial. Setting: Clinical research center at an academic medical university. Patient(s): Seventeen women with FHA were randomized either to CBT or observation. Intervention(s): CBT versus observation. Main Outcome Measure(s): Circulatory concentrations of cortisol, leptin, thyroid-stimulating hormone (TSH), total and free thyronine (T 3 ), and total and free thyroxine (T 4 ) before and immediately after completion of CBT or observation. (Each woman served as her own control.) Result(s): Cognitive behavior therapy but not observation reduced cortisol levels in women with FHA. There were no changes in cortisol, leptin, TSH, T 3 , or T 4 levels in women randomized to observation. Women treated with CBT showed increased levels of leptin and TSH, but their levels of T 3 and T 4 remained unchanged. Conclusion(s): In women with FHA, CBT ameliorated hypercortisolism and improved the neuroendocrine and metabolic concomitants of FHA while observation did not. We conclude that a cognitive, nonpharmacologic approach aimed at alleviating problematic attitudes not only can restore ovarian activity but also improve neuroendocrine and metabolic function in women with FHA.