Pisarska, Margareta D.

Introduction Functional hypothalamic amenorrhea (FHA) accounts for 30% of secondary amenorrhea and is characterized by hypothalamic hypercortisolemia, hypothalamic hypothyroidism, and anovulation with hypoestrogenemia due to disrupted GnRH drive. While FHA is associated with decreased bone mineralization; it remains unclear how bone health compares to menopausal women, who also experience bone loss. This study compared dual-energy x-ray absorptiometry (DXA) bone health parameters among women with FHA, eumenorrheic controls, and recently menopausal women. It also examined the impact of prior combined oral contraceptive (COC) use on bone mineral density (BMD) in women with FHA. Methods This cross-sectional study included 20 women with FHA, 9 eumenorrheic controls, and 12 recently menopausal women who underwent hip and spine DXA. None of the participants were taking hormone therapy. FHA was defined as ≥3 months of amenorrhea, estradiol <50 pg/ml, FSH and LH <10 mIU/L, excluding other etiologies. DXA bone parameters were measured using Lunar iDXA (GE) including BMD from lumbar spine (L1-L4) and hip. Results By design, age differed significantly across groups (p < 0.0001), with median ages of 27.8 years [23.4, 34.1] in women with FHA, 29.6 years [28.3, 32.4] in eumenorrheic controls, and 55.3 years [53.5, 56.6] in recently menopausal women. There were no significant differences in weight or BMI across groups. Significant differences were observed at all measured skeletal sites, including all lumbar spine levels, femur neck, total femur, and total BMD (all p < 0.05). Pairwise comparisons revealed that lumbar spine BMD was significantly lower in FHA compared to eumenorrheic controls (p = 0.04), while FHA and menopausal women did not significantly differ from each other (p = 0.07). Among FHA women with prior COC use, L1–4 BMD was not significantly different from controls (p = 0.19). Conclusions Lumbar spine BMD in young women with FHA was comparable to that of recently menopausal women, highlighting the profound skeletal impact of chronic estrogen deficiency. Prior COC use may partially attenuate FHA-associated bone loss, though larger studies are needed to confirm this observation. Future studies should explore whether skeletal outcomes vary by FHA etiology and the potential role of COC duration in preserving BMD.

Background: Functional hypothalamic amenorrhea (FHA) is a common form of secondary amenorrhea caused partly by undernutrition relative to demand. Objective: To compare the dietary nutritional intake between women with FHA and eumenorrheic controls and evaluate micronutrient profiles. Methods: This cross-sectional study included 30 women with FHA and 29 eumenorrheic controls not on hormones. FHA was defined as ≥3 consecutive months of amenorrhea, estradiol of <50 pg/mL, and FSH and LH of <10 mIU/L, excluding other etiologies. A 3-day food diary was collected for dietary analysis, excluding dietary supplements using ESHA Research Food Processor. Results: The mean age of women with FHA and controls was 26.4 years ± 6.2 versus 30.3 years ± 3.7 ( p = 0.002), with no differences in BMI ( p = 0.16) or the waist-to-hip ratio ( p = 0.71). Women with FHA and controls consumed comparable median calorie intake (1784 kcal [1465, 2011] vs. 1732 kcal [1578, 1982], p = 0.62), with no differences in self-reported exercise patterns. Women with FHA consumed more dietary protein (84.2g [74, 112] vs. 74 g [59, 92], p = 0.001) and dietary fiber (30.1 g [22, 43] vs. 17.3 g [15, 23], p = 0.02) versus controls, respectively. When expressed as a percentage of estimated average requirements (% estimated average requirement), women with FHA had higher intakes of vitamin A (105% [45, 219] vs. 43% [21, 86], p = 0.005), vitamin C (201% [139, 351] vs. 107% [75, 190], p = 0.004), and iron (169% [146, 220] vs. 120% [99, 192], p = 0.027) compared with controls. Conclusions: Women with FHA had similar caloric intake to eumenorrheic controls but consumed more dietary protein, fiber, vitamin A, vitamin C, and iron. Future studies should examine the nutritional profiles of women with FHA in relation to long-term health consequences such as bone and vascular health.

Abstract Context Endothelial dysfunction and altered psychological measures have been identified in women with functional hypothalamic amenorrhea (FHA). Estradiol (E2) replacement, a known vasodilator, may potentially reverse vascular dysfunction and improve psychological health. Objective To evaluate 12 weeks of physiologic E2 replacement on vascular, hormonal, and psychological outcomes in women with FHA. Methods A randomized, double-blind, placebo-controlled trial was conducted in 29 women with FHA with 0.1 mg/day transdermal E2 (n = 14) or placebo patch (n = 15) twice weekly for 12 weeks. FHA was defined as amenorrhea ≥3 consecutive months, E2 &lt; 50 pg/mL, follicle-stimulating hormone (FSH) and luteinizing hormone (LH) &lt;10 mIU/L, LH:FSH &lt;1, excluding other etiologies. Endothelial dysfunction (reactive hyperemic index ≤ 1.67) was assessed, as were hormonal and psychological measures. Results Women with FHA had a mean age of 26.2 ± 6.3 years, body mass index of 21.5 ± 3.3 kg/m2, with 63% being non-Hispanic White. Baseline characteristics did not differ between groups. After 12 weeks, E2 levels were significantly higher in the E2 group (112.0 vs 36.5 pg/mL, P = .0002). However, there were no significant differences in vascular, hormonal, or psychological outcomes between E2 and placebo groups at week 12. Cortisol levels showed a near-significant decrease in the E2 group compared to an increase with placebo (−.4 vs 3.1 µg/dL, P = .05). Conclusion In women with FHA, 12 weeks of transdermal E2 increased serum E2 levels but did not improve vascular or psychological health measures. Further studies with larger sample sizes and longer follow-up are needed to explore the long-term effects of E2 therapy on cardiovascular and mental health outcomes in this population.

Abstract Disclosure: N. Safwan: None. E.R. Uddenberg: None. M.D. Hurtado: None. M. Saadedine: None. S.S. Faubion: None. O. Obrutu: None. S.L. Berga: None. M.D. Pisarska: None. C. Bairey Merz: None. C.L. Shufelt: None. Background: Functional hypothalamic amenorrhea (FHA) accounts for 30% of secondary amenorrhea due to suppression of GnRH associated hypercortisolemia resulting in chronic hypoestrogenemia. FHA occurs as a result of varying combinations of psychosocial stress, excessive exercise, and/or disordered eating. FHA is associated with decreased bone mineralization; however, it is unknown how bone health compares to older, menopausal women who also experience bone loss. We compared dual-energy x-ray absorptiometry (DXA) bone health parameters among women with FHA, eumenorrheic controls, and recently menopausal women and evaluated if previous oral contraceptive (OC) use among FHA women has an impact on bone mineral density (BMD). Methods: This cross-sectional study included 20 women with FHA, 9 eumenorrheic controls, and 12 recently menopausal women who underwent hip and spine DXA. All participants were not on hormone therapy. FHA was defined as amenorrhea &gt;3 consecutive months, estradiol &lt;50 pg/ml, FSH &lt;10 mIU/L, and LH &lt;10 mIU/L, excluding other etiologies including PCOS, prolactinoma, thyroid dysfunction, and pregnancy. Eumenorrheic controls had self-reported monthly menses confirmed with day 22-24 progesterone &gt;3 ng/ml. Recently menopausal women had natural menopause &lt;3 years of final menstrual period, and FSH &gt;30 mIU/L. DXA bone health parameters were measured using Lunar iDXA (GE) including BMD from the lumbar spine (L1-L4) and hip. Statistical analysis included nonparametric testing with pairwise Wilcoxon rank sum and Kruskal Wallis, reported as median [interquartile ranges]. Results: By design, the mean age of FHA was 28 ± 6 yr, 29 ± 3 yr for controls, and 54 ± 2 yr for recently menopausal women (p&lt;0.0001). There were no differences in weight or BMI among the groups (p=0.27, p=0.30, respectively). BMD L1-L4 differed among the three groups with 1.10 g/cm2 [1.00, 1.24] for FHA, 1.18 [1.15, 1.29] for eumenorrheic controls, and 1.02 [0.96, 1.08] for menopausal women (p=0.002). Pairwise analysis revealed a significant difference in BMD L1-L4 between FHA and controls (p=0.04) and menopausal women and controls (p=0.009, age-adjusted). However, there was no difference in BMD L1-L4 between FHA and menopausal women (p=0.08, age-adjusted). In FHA women with previous OC use, BMD L1-L4 was not different from eumenorrheic controls (p=0.20), while BMD L1-L4 differed from that of recently menopausal women (p=0.004). These differences were not observed at the hip. Conclusion: Compared to eumenorrheic controls, lumbar spine BMD in young women with FHA (mean age 28 yr) was similar to recently menopausal women (mean age 54 yr) emphasizing the profound bone impact of FHA. Previous OC use seems to mitigate FHA bone mineralization changes. Future studies should investigate if bone health differs among women with FHA based on underlying cause and if previous OC use plays a role in maintaining bone health. Presentation: 6/3/2024

Abstract Disclosure: E.R. Uddenberg: None. N. Safwan: None. G. Cook-Wiens: None. O. Obrutu: None. M. Saadedine: None. M.D. Hurtado: None. S. Faubion: None. M.D. Pisarska: None. S.L. Berga: None. J.E. Manson: None. C.N. Bairey Merz: None. C.L. Shufelt: None. Background: Functional hypothalamic amenorrhea (FHA) occurs in women of reproductive age and is a common form of secondary amenorrhea that results in hypoestrogenemia and hypercortisolemia. The underlying cause of FHA is due to a mismatch between energetic intake and expenditure that often manifests as disordered eating, excessive exercise, and psychosocial stress. Previous research identified that 1 in 3 women with FHA had endothelial dysfunction, a preclinical marker for cardiovascular disease. We sought to evaluate the nutrition content in young women with FHA compared to eumenorrheic controls and further assess the relationship to endothelial dysfunction. Methods: We enrolled 30 women with FHA and 29 eumenorrheic controls, not on hormones. FHA was defined as ≥3 consecutive months of amenorrhea, estradiol &lt;50 pg/mL, FSH&lt;10 mIU/L, and LH&lt;10 mIU/L, and exclusion of polycystic ovary syndrome, hyperprolactinemia, thyroid dysfunction, and pregnancy. Eumenorrheic controls had monthly menses with ovulation (progesterone ≥4 ng/mL). Vascular function was measured using EndoPAT 2000 (Itamar® Medical Ltd) to calculate the reactive hyperemic index (RHI). An RHI ≤1.67 indicates endothelial dysfunction. Nutritional intake was collected using a 3-day food diary and analyzed using ESHA Research Food Processor® Nutrition Analysis. Percent (%) recommendation values for nutrition content comparison were calculated based on height, weight, and age. Statistical analysis included Analysis of Variance and Kruskal Wallis test with nonparametric variables reported as median [IQR]. Results: The mean age and BMI of FHA and controls were 26.4 ± 6.2 yrs and 30.3 ± 3.7 yrs (p=0.008), and 21.6 ± 6.2 and 21.8 ± 2.0 kg/m2 (p=0.16), respectively. The median months of FHA amenorrhea was 12 months [5.0, 34.0]. After adjusting for age, there was no difference in caloric intakes in women with FHA compared to controls (1783.9 [1465, 2011] kcal vs. 1731.9 [1578, 1982] kcal, p=0.73); however FHA has higher intake of grams of protein (84.2 [74, 112] g vs. 74 [59, 92] g, p=0.0036), and higher grams of dietary fiber (30.1 [22, 43] g vs. 17.3 [15, 23] g, p=0.0037), respectively. In women with FHA, endothelial dysfunction was associated with a higher % recommended calories (p=0.0098), calories from fat (p=0.02), grams of saturated fat (p=0.03), and grams of carbohydrates (p=0.049). Conclusions: Our results demonstrate that women with FHA consumed similar daily calories, although more grams of protein and dietary fiber than controls. In women with FHA, higher calories, calories from fat, grams of saturated fat and carbohydrates were associated with endothelial dysfunction. Future studies should aim to identify other factors related to endothelial dysfunction among women with FHA and whether some FHA phenotypes are associated with more endothelial dysfunction than others. Presentation: 6/1/2024

Abstract Disclosure: E.R. Uddenberg: None. N. Safwan: None. G. Cook-Wiens: None. O. Obrutu: None. M. Saadedine: None. M.D. Hurtado: None. S. Faubion: None. M.D. Pisarska: None. S.L. Berga: None. J.E. Manson: None. C.N. Bairey Merz: None. C.L. Shufelt: None. Background: Functional hypothalamic amenorrhea (FHA) occurs in women of reproductive age and is a common form of secondary amenorrhea that results in hypoestrogenemia and hypercortisolemia. The underlying cause of FHA is due to a mismatch between energetic intake and expenditure that often manifests as disordered eating, excessive exercise, and psychosocial stress. Previous research identified that 1 in 3 women with FHA had endothelial dysfunction, a preclinical marker for cardiovascular disease. We sought to evaluate the nutrition content in young women with FHA compared to eumenorrheic controls and further assess the relationship to endothelial dysfunction. Methods: We enrolled 30 women with FHA and 29 eumenorrheic controls, not on hormones. FHA was defined as ≥3 consecutive months of amenorrhea, estradiol &lt;50 pg/mL, FSH&lt;10 mIU/L, and LH&lt;10 mIU/L, and exclusion of polycystic ovary syndrome, hyperprolactinemia, thyroid dysfunction, and pregnancy. Eumenorrheic controls had monthly menses with ovulation (progesterone ≥4 ng/mL). Vascular function was measured using EndoPAT 2000 (Itamar® Medical Ltd) to calculate the reactive hyperemic index (RHI). An RHI ≤1.67 indicates endothelial dysfunction. Nutritional intake was collected using a 3-day food diary and analyzed using ESHA Research Food Processor® Nutrition Analysis. Percent (%) recommendation values for nutrition content comparison were calculated based on height, weight, and age. Statistical analysis included Analysis of Variance and Kruskal Wallis test with nonparametric variables reported as median [IQR]. Results: The mean age and BMI of FHA and controls were 26.4 ± 6.2 yrs and 30.3 ± 3.7 yrs (p=0.008), and 21.6 ± 6.2 and 21.8 ± 2.0 kg/m2 (p=0.16), respectively. The median months of FHA amenorrhea was 12 months [5.0, 34.0]. After adjusting for age, there was no difference in caloric intakes in women with FHA compared to controls (1783.9 [1465, 2011] kcal vs. 1731.9 [1578, 1982] kcal, p=0.73); however FHA has higher intake of grams of protein (84.2 [74, 112] g vs. 74 [59, 92] g, p=0.0036), and higher grams of dietary fiber (30.1 [22, 43] g vs. 17.3 [15, 23] g, p=0.0037), respectively. In women with FHA, endothelial dysfunction was associated with a higher % recommended calories (p=0.0098), calories from fat (p=0.02), grams of saturated fat (p=0.03), and grams of carbohydrates (p=0.049). Conclusions: Our results demonstrate that women with FHA consumed similar daily calories, although more grams of protein and dietary fiber than controls. In women with FHA, higher calories, calories from fat, grams of saturated fat and carbohydrates were associated with endothelial dysfunction. Future studies should aim to identify other factors related to endothelial dysfunction among women with FHA and whether some FHA phenotypes are associated with more endothelial dysfunction than others. Presentation: 6/1/2024

Abstract Context Endothelial dysfunction is a preclinical cardiovascular disease (CVD) marker. Due to various neuroendocrine aberrations, functional hypothalamic amenorrhea (FHA) may be a sex-specific risk factor for CVD in young women. Objective To investigate endothelial function in women with FHA, compared with eumenorrheic controls and recently menopausal women. Methods We performed a cross-sectional analysis among women with FHA (n = 30), eumenorrheic controls (n = 29), and recently menopausal women (n = 30). FHA was defined as amenorrhea ≥3 consecutive months, estradiol &lt;50 pg/mL, follicle-stimulating hormone (FSH) &lt; 10 mIU/mL, and luteinizing hormone (LH) &lt; 10 mIU/mL, excluding other etiologies. Participants were recruited through obstetrics and gynecology referrals, social media advertising, and review of electronic health records. Preclinical CVD was measured using EndoPAT 2000 to calculate reactive hyperemic index (RHI). RHI ≤1.67 indicates endothelial dysfunction. Results Mean estradiol levels in women with FHA, as compared with eumenorrheic controls and recently menopausal women, were 29.0 ± 18.1, 46.4 ± 15.7, and 10.9 ± 14.4 pg/mL (P &lt; .0001), respectively. Women with FHA had lower insulin (P = .0095) and higher cortisol (P = .0004) compared with controls. RHI was significantly lower in women with FHA compared with eumenorrheic controls and recently menopausal women (1.8 ± 0.5 vs 2.2 ± 0.5 vs 2.2 ± 0.6, respectively; P = .008), and 35% of women with FHA had RHI ≤1.67, consistent with endothelial dysfunction. Conclusion These results demonstrate endothelial dysfunction in 1 out of 3 young women with FHA. FHA may be a contributor to preclinical CVD, and it is not explained by hypoestrogenemia alone.