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Castaneda, Regina

0009-0008-4735-6609

Mayo Clinic

Division of General Internal Medicine, Mayo Clinic, Jacksonville, Florida.

Citations 12

The New ACP Clinical Guideline for the Pharmacologic Treatment of Menopausal Vasomotor Symptoms: Where Do We Go From Here?
Castaneda, Regina , Faubion, Stephanie S

Annals of Internal Medicine | October 5, 2026 | Volume: No volume available | Issue: No issue available | Pages: No page available

10.7326/annals-26-03184 Get It

Cardiometabolic and ASCVD Outcomes Associated with Tirzepatide: Insights from a One-Year Multicenter Observational Study
Castaneda, Regina , Verastegui, Alfredo , Ghusn, Wissam , Bechenati, Dima , Espinosa, Maria A , Villamarin, Jose L. , Tama, Elif , Frederiksen, Kirsten , Acosta, Andrés , Ghusn, Wissam , Bechenati, Dima , Acosta, Andres , Villamarin, Jose , Verastegui, Alfredo , Tama, Elif , Castaneda, Regina , Gutiérrez, René de Jesús Rivera , Hurtado, Maria D.

Journal of the Endocrine Society | September 9, 2026 | Volume: No volume available | Issue: No issue available | Pages: No page available

10.1210/jendso/bvag210 Get It

Abstract Purpose To evaluate the association of long-term, continuous tirzepatide use with cardiometabolic risk parameters and estimated 10-year atherosclerotic cardiovascular disease (ASCVD) risk in real-world practice. Methods This multicenter retrospective observational study included 1,028 adults with overweight or obesity who received weekly subcutaneous tirzepatide for at least 12 months within the Mayo Clinic Health System from June 2022 through May 2024. ASCVD risk analyses included 275 individuals with complete baseline and 12-month follow-up data. Outcomes were changes in cardiometabolic parameters, estimated 10-year ASCVD risk, and ASCVD risk category. Results At 12 months, median total body weight loss (TBWL) was 12.6%. Fasting glucose, HbA1c, triglycerides, and alanine aminotransferase decreased by 19.5%, 16.0%, 8.5%, and 10.6%, respectively, whereas HDL cholesterol increased by 11.3% (all P < .001). Mean 10-year ASCVD risk did not change significantly overall (mean relative change, −3.7%; P = .18), but changes differed by TBWL category (ANOVA, P < .001). ASCVD risk decreased among individuals achieving 10%–20% TBWL (−9.6%; P = .009) and >20% TBWL (−14.2%; P = .005), but not among those achieving <10% TBWL (+7.7%; P = .22). Low-risk prevalence increased from 38.3% to 46.4% (P < .001), with 11.7% transitioning from higher-risk categories to low risk. Main findings Continuous tirzepatide use for at least 12 months was associated with clinically meaningful improvements in cardiometabolic parameters. Reductions in estimated 10-year ASCVD risk were observed among individuals achieving at least 10% TBWL, supporting greater weight loss as an important marker of cardiovascular risk improvement.
Psychological symptoms during perimenopause: a global perspective
Hedges, Mary S. , Martin, Yella , Castaneda, Regina , Karam, Jana , Zhaunova, Liudmila , Faubion, Stephanie S. , Shufelt, Chrisandra , Cunningham, Adam C , Hewings-Martin, Yella , Castaneda, Regina , Karam, Jana , Zhaunova, Liudmila , Faubion, Stephanie S , Shufelt, Chrisandra L , Hedges, Mary S , Cunningham, Adam

Menopause | July 28, 2026 | Volume: No volume available | Issue: No issue available | Pages: No page available

10.1097/gme.0000000000002872 Get It

Objectives: Psychological health changes are known to occur during perimenopause, but the extent to which these differ from premenopause remains unclear. This study aimed to assess psychological symptoms during perimenopause compared with premenopause and evaluate differences by country. Methods: Flo app users aged 35 years or above not taking hormonal contraception or hormone therapy were included. The psychological domain of the Menopause Rating Scale (range 0-16) and symptoms within this domain of depressive mood, irritability, anxiety, and exhaustion (range 0-4 each) were evaluated. Participants in perimenopause were compared with those in premenopause (self-reported not in perimenopause or postmenopause). Results: A total of 7,975 women were included, with 2,353 in perimenopause (mean age 45 years [SD±4.5]) and 5,622 in premenopause (39 y [SD±4.0]). Psychological Menopause Rating Scale scores in the perimenopause group were significantly higher (7.3 [SD±3.56]) than in the premenopause group (4.8 [SD±3.56]; P <0.001). The individual symptoms of depressive mood, irritability, anxiety, and exhaustion were also higher in the perimenopause group ( P <0.001, for all respectively), with the largest difference being exhaustion. These findings remained after adjusting for known confounders, including an existing diagnosis of anxiety or depression. Geographic analysis included 20 countries across 6 continents, with significant differences identified between countries for the overall psychological symptom domain score and all individual symptoms. Conclusion: Significantly greater psychological symptom burden was identified in the perimenopause group compared with the premenopause group, with the greatest difference noted for the individual symptom of exhaustion. Differences in symptom burden were also identified by country.
Weight loss interventions and sexual function in midlife women: the emerging role of glucagon-like peptide-1 receptor agonists
Castaneda, Regina , Sepulveda-Gonzalez, Diego , Andrade, Maria D. Hurtado, Shufelt, Chrisandra L., Faubion, Stephanie S., Sepulveda, Diego, Hurtado Andrade, Maria D, Castaneda, Regina , Andrade, Maria D. Hurtado, Shufelt, Chrisandra , Faubion, Stephanie S.

Menopause | July 28, 2026 | Volume: No volume available | Issue: No issue available | Pages: No page available

10.1097/gme.0000000000002854 Get It

Importance and Objective: Sexual health is a multidimensional aspect of women’s well-being. It is particularly vulnerable during midlife, when the physiological and psychosocial changes of the menopause transition intersect with the growing burden of obesity. Glucagon-like peptide-1 (GLP-1) receptor agonists have emerged as highly effective pharmacologic treatments for obesity, yet their effects on female sexual function remain largely uncharacterized. This review aims to discuss the interplay among obesity, midlife, obesity treatments, and female sexual health, with a focused synthesis of available evidence on GLP-1–based therapies and sexual outcomes in women. Methods: This narrative review synthesizes preclinical studies, case reports, observational data, and clinical trials identified through PubMed searches from inception through March 2026, examining female sexual function in the context of obesity, the menopause transition, obesity treatments, and GLP-1 receptor agonist therapy. Discussion and Conclusion: Obesity impairs female sexual function through hormonal, vascular, and psychosocial mechanisms. Accordingly, lifestyle interventions and bariatric surgery have demonstrated meaningful improvements in sexual function. In contrast, GLP-1 receptor agonists, despite conferring substantial weight loss and favorable metabolic effects, may paradoxically suppress sexual desire and arousal through central neuroendocrine mechanisms, including the modulation of dopaminergic reward and serotonergic signaling. While emerging case reports and preclinical data support this concern, systematic clinical evidence remains limited, highlighting the need for prospective studies with longitudinal sexual function endpoints. In this context, clinicians should proactively assess sexual function before and during GLP-1 therapy using validated instruments and integrate sexual health into comprehensive obesity care for midlife women.
Impact of social determinants of health on perimenopause symptom burden: insights from the Flo app
Martin, Yella , Karam, Jana , Hedges, Mary S. , Castaneda, Regina , Zhaunova, Liudmila , Faubion, Stephanie S. , Shufelt, Chrisandra , Cunningham, Adam C , Hedges, Mary S , Castaneda, Regina , Zhaunova, Liudmila , Faubion, Stephanie S , Shufelt, Chrisandra L , Hewings-Martin, Yella , Karam, Jana , Cunningham, Adam

Climacteric | June 29, 2026 | Volume: No volume available | Issue: No issue available | Pages: 1-8

10.1080/13697137.2026.2682228 Get It

Sex, Not Age, Predicts Weight Loss Outcomes With Tirzepatide: A Retrospective Analysis
Castaneda, Regina , Bechenati, Dima , Espinosa, Maria A., Villamarin, Jose L. , Tama, Elif , Safwan, Nancy , Fansa, Sima , Verastegui, Alfredo , McNally, Allyson W, Meek, Jesse L., Rajjo, Tamim , Shufelt, Chrisandra , Bechenati, Dima , Rivera Gutierrez, Rene de J , Espinosa, Maria A , Villamarin, Jose , Tama, Elif , Safwan, Nancy , Fansa, Sima , Verastegui, Alfredo , McNally, Allyson W , Mara, Kristin C , Winham, Stacey J , Rajjo, Tamim I , Acosta, Andres , Faubion, Stephanie S , Shufelt, Chrisandra L , Hurtado, Maria Daniela , Castaneda, Regina , Gutiérrez, René de Jesús Rivera , Mara, Kristin C. , Winham, Stacey J. , Acosta, Andrés , Faubion, Stephanie S. , Hurtado, Maria D.

Obesity | June 15, 2026 | Volume: No volume available | Issue: No issue available | Pages: No page available

10.1002/oby.70231 Get It

ABSTRACT Objective This study assessed the impact of sex and age on weight loss outcomes in patients receiving tirzepatide in real‐world clinical practice. Methods We conducted a retrospective cohort study of adults with overweight or obesity who initiated tirzepatide at Mayo Clinic between June 2022 and May 2024 and completed ≥ 12 months of continuous therapy. Primary outcome was total body weight loss percentage (TBWL%) at 15 months, stratified by sex and age groups (≤ 45, 46–59, ≥ 60 years). Results Among 1039 patients (57% women; mean age 56 ± 11 years), women achieved significantly greater TBWL% than men after 15 months of treatment (15.1% vs. 10.7%, p < 0.001). Patients aged ≤ 45 years had greater weight loss than those ≥ 60 years (15.1% vs. 12.3%, p = 0.024). In multivariable analyses, greater weight loss was independently associated with female sex, absence of type 2 diabetes, no prior obesity medication use, no concomitant weight gain‐promoting medications, and higher tirzepatide dosage. Age was not an independent predictor. Conclusions Sex, but not age, predicted weight loss with tirzepatide among individuals using the medication continuously for ≥ 12 months. These findings underscore the importance of incorporating sex‐specific considerations into personalized obesity treatment strategies.
Biological markers of aging across the menopause transition: current evidence
Castaneda, Regina , Uddenberg, Erin R, Andrade, Maria D. Hurtado, Meek, Jesse L., Frankhouser, Kaylin N., Faubion, Stephanie S., Chini, Eduardo N., Brar, Pamila K., Shufelt, Chrisandra , Hurtado Andrade, Maria D, Shufelt, Chrisandra L , Castaneda, Regina , Faubion, Stephanie S. , Chini, Eduardo N. , LeBrasseur, Nathan K. , Brar, Pamila

Menopause | May 5, 2026 | Volume: No volume available | Issue: No issue available | Pages: No page available

10.1097/gme.0000000000002802 Get It

Importance and Objective: Aging is a complex biological process uniquely shaped in women by hormonal transitions, particularly across the menopause transition. While chronological age alone fails to capture individual health variability, emerging molecular biomarkers offer tools to quantify biological aging and understand mechanisms underlying age-related decline. This review synthesizes the current landscape of aging biomarkers, including senescence-associated secretory phenotype factors, epigenetic clocks, clonal hematopoiesis of indeterminate potential, and telomere length, with a particular emphasis on their relevance to menopause. Methods: This narrative review synthesizes human studies, translational research, and foundational basic science identified through PubMed searches through June 2025, examining aging biomarkers in general populations, among women in the menopause transition, and in relation to vasomotor symptoms and hormone therapy. Discussion and Conclusion: Evidence demonstrates that changes in biological aging biomarkers are observed across multiple molecular systems during midlife, including the menopause transition, reflecting broader age-related biological remodeling. Postmenopausal status, particularly following early or surgical menopause, has been associated with biological aging phenotypes, including elevated senescence-associated secretory phenotype factors, epigenetic age acceleration, clonal hematopoiesis, and shorter leukocyte telomere length, likely reflecting a combination of chronological aging, hormonal changes, and individual biological vulnerability. While severe vasomotor symptoms have been linked to higher epigenetic age, hormone therapy may favorably influence certain senescence markers and biological age discrepancy. Despite these advances, significant limitations constrain clinical translation, as current biomarkers capture overlapping biological processes and lack validated thresholds to define biological aging, especially in women. Future research requires large, longitudinal studies across diverse populations to establish clinically meaningful thresholds and sex-specific calibration. Advancing precision health strategies for women requires a better understanding of how reproductive and hormonal factors modify biomarker trajectories to improve risk prediction and to facilitate the development of targeted interventions for age-related diseases.
Metabolic and Bariatric Surgery vs Glucagon-like peptide-1 Receptor Agonist Therapy
Ghusn, Wissam, Abedalqader, Tala, Ghazal, Nour El, Espinosa, Maria Antonia, Villamarin, Jose, Gutierrez, Rene Rivera, Castaneda, Regina , Bechenati, Dima , Fansa, Sima , Hurtado, Maria D., Acosta, Andres, Ghanem, Omar M., Jawhar, Noura , El Ghazal, Nour , Castaneda, Regina , Ghusn, Wissam , Vierkant, Robert A. , Abedalqader, Tala , Villamarin, Jose L. , Gutiérrez, René de Jesús Rivera , Hurtado, M D, Acosta, Andres , Ghanem, Omar M.

Annals of Surgery | April 20, 2026 | Volume: No volume available | Issue: No issue available | Pages: No page available

10.1097/sla.0000000000007064 Get It

Objective: To compare 1-year changes in estimated 10-year and lifetime atherosclerotic cardiovascular disease (ASCVD) risk following metabolic and bariatric surgery (MBS) versus glucagon-like peptide-1 receptor agonist (GLP-1RA) therapy among adults with obesity. Summary Background Data: Obesity is a major driver of ASCVD through adverse metabolic and inflammatory pathways. Metabolic and bariatric surgery and GLP-1 receptor agonists represent the most effective contemporary treatments for obesity and are increasingly used to mitigate cardiovascular risk. However, their comparative effects on integrated short-term and lifetime ASCVD risk in real-world clinical practice remain incompletely characterized. Methods: We conducted a retrospective cohort study of adults with obesity (body mass index ≥30 kg/m²) who underwent MBS or initiated GLP-1RA therapy between 2020 and 2023 within a large tertiary health care system in the United States. Participants were identified from electronic health records and followed for 12 months. Primary outcomes were 1-year changes in estimated 10-year and lifetime ASCVD risk. Secondary outcomes included percent total body weight loss, blood pressure, and lipid parameters. Multivariable linear regression models were used to adjust for baseline body mass index and baseline ASCVD risk. Results: The final cohort included 812 patients, of whom 579 underwent MBS and 233 initiated GLP-1RA therapy. At baseline, patients receiving GLP-1RAs were older and had higher estimated ASCVD risk. At 1 year, reductions in 10-year ASCVD risk were similar between groups (−0.8% vs. −1.1%; P =.36). In contrast, lifetime ASCVD risk decreased significantly more following MBS than GLP-1RA therapy (−8.6% vs. −1.7%; P <.001). MBS was associated with greater percent total body weight loss (−27.8% vs. −11.1%; P <.001) and more favorable lipid changes, including larger reductions in low-density lipoprotein cholesterol and greater increases in high-density lipoprotein cholesterol. After adjustment, MBS remained independently associated with a greater reduction in lifetime ASCVD risk compared with GLP-1RA therapy (β −6.92; 95% CI −9.22 to −4.62). Conclusions: In this real-world cohort, both MBS and GLP-1RA therapy were associated with improvements in estimated cardiovascular risk, but MBS conferred substantially greater reductions in lifetime ASCVD risk, accompanied by superior weight loss and lipid improvements. These findings highlight the complementary roles of surgical and pharmacologic therapies in obesity management and may inform strategies to optimize long-term cardiovascular risk reduction.
Dietary Intake of Macronutrients and Micronutrients in Women with Functional Hypothalamic Amenorrhea
Uddenberg, Erin R, Safwan, Nancy , Castaneda, Regina , Saadedine, Mariam , Maughan, Jenna , Andrade, Maria D. Hurtado, Pisarska, Margareta D. , Berga, Sarah L. , Manson, James, Merz, C. Noel Bairey, Shufelt, Chrisandra , Hurtado Andrade, Maria D, Shufelt, Chrisandra L , Castaneda, Regina , Faubion, Stephanie S. , Manson, JoAnn E., Merz, C. Noel Bairey

Journal of Women's Health | March 11, 2026 | Volume: 35 | Issue: 7 | Pages: 662-669

10.1177/15409996261428013 Get It

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.
Global perspectives on perimenopause: a digital survey of knowledge and symptoms using the Flo application
Hedges, Mary S. , Martin, Yella , Karam, Jana , Castaneda, Regina , Xu, Yihan, Shufelt, Chrisandra , Xu, Yihan , Shufelt, Chrisandra L , Hedges, Mary S , Castaneda, Regina , Hewings-Martin, Yella , Cunningham, Adam , Xu, Yihan , Zhaunova, Liudmila , Faubion, Stephanie S.

Menopause | January 28, 2026 | Volume: 33 | Issue: 7 | Pages: 789-798

10.1097/gme.0000000000002730 Get It

Objective: Perimenopause is the time leading up to a woman’s last menstrual cycle and includes the 12 months afterward. Studies that systematically compare perimenopause symptoms across diverse cultural and geographic settings are lacking. This study, utilizing data from Flo, an international mobile health application, aimed to assess global knowledge and symptom experiences related to perimenopause. Methods: This cross-sectional survey was conducted via the Flo application, offered to users aged 18 years and above. The primary endpoints were knowledge of perimenopause symptoms from all survey participants, and self-reported perimenopause symptoms for survey participants aged 35 years and above. Secondary analyses compared knowledge scores and symptoms across geographic regions. Results: A total of 17,494 women from 158 countries were included. Commonly recognized perimenopause symptoms included hot flashes (71%), sleep problems (68%), and weight gain (65%). Of the participants, 12,681 were aged 35 years or above, with the most common self-reported symptoms being fatigue (83%), physical and mental exhaustion (83%), irritability (80%), depressive mood (77%), sleep problems (76%), digestive issues (76%), and anxiety (75%). This pattern of symptoms was similar among those who self-reported being in perimenopause, though higher than in those not in perimenopause. International variation in perimenopause symptom knowledge and symptoms experienced was noted ( P <0.001). Conclusions: This survey highlights a discordance between perimenopause knowledge and actual symptoms experienced across diverse global populations. While hot flashes were the most widely recognized symptom, respondents aged 35 years or above most commonly reported experiencing fatigue, physical and mental exhaustion, and irritability.