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Scarth M, Havnes IA, Bjørnebekk A. Anabolic-androgenic steroid use disorder: case for recognition as a substance use disorder with specific diagnostic criteria. Br J Psychiatry 2025:1-5. [PMID: 40355134 DOI: 10.1192/bjp.2025.73] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 05/14/2025]
Abstract
Approximately one in three people who use anabolic-androgenic steroids (AASs) develop dependence, characterised by both psychiatric and somatic symptoms. Despite this, AAS use disorder (AASUD) is not distinctly recognised in the latest versions of either the ICD or DSM, impeding both clinical care and research progress. It is clear that AASUD shares many features and correlates with substance use disorders (SUDs) that have specific diagnostic criteria in these classification systems, such as stimulants or opioids. We aim to outline the overlap between AASUD and more 'typical' SUDs as well as highlight the specific concerns related to AASUD that warrant recognition and distinct diagnostic criteria.
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Affiliation(s)
- Morgan Scarth
- Anabolic Androgenic Steroid Research Group, Section for Clinical Addiction Research, Division of Mental Health and Addiction, Oslo University Hospital, Oslo, Norway
| | - Ingrid Amalia Havnes
- Division of Mental Health and Addiction, Oslo University Hospital, Oslo, Norway
- Institute of Clinical Medicine, University of Oslo, Oslo, Norway
| | - Astrid Bjørnebekk
- Anabolic Androgenic Steroid Research Group, Section for Clinical Addiction Research, Division of Mental Health and Addiction, Oslo University Hospital, Oslo, Norway
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Matthesen AT, Rosendal C, Christensen EH, Beckmann H, Klit FØ, Nikontovic A, Bizik G, Vestergaard P, Dal J. Psychiatric morbidity in acromegaly: a cohort study and meta-analysis of the literature. Pituitary 2025; 28:42. [PMID: 40082297 PMCID: PMC11906539 DOI: 10.1007/s11102-025-01509-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 02/21/2025] [Indexed: 03/16/2025]
Abstract
PURPOSE We aimed to evaluate the risk of psychiatric disorders through a retrospective cohort study comparing acromegaly and non-functioning pituitary adenomas (NFPAs) and a meta-analysis of existing literature. METHODS The cohort study included data from patient records analyzed using Chi2-, T-tests and binary regression. The meta-analysis included studies retrieved from PubMed, Embase and PsycINFO that reported risk of psychopathology in acromegaly compared to NFPA or healthy controls, using a random effects model. RESULTS The study population comprised 105 acromegaly and 211 NFPA patients, with similar sex distributions. Patients with acromegaly presented with smaller pituitary adenomas (17.9 (SD: 9.9) mm vs. 22.9 (SD: 10.6) mm, p < 0.001), more frequent pituitary surgery (89.1 vs. 60.2%, p < 0.001) and hormone replacement therapy (25.7 vs. 16.1%, p = 0.042). Acromegaly patients had higher risk of depression (RR: 1.9, CI95% [1.2-3.2], p = 0.009), and increased need of admissions to the psychiatric ward (5.7 vs. 0.5%, p = 0.006). The relative risk of anxiety was 1.4 (CI95% [0.5-4.4], p = 0.53). Daily opioid use was higher in acromegaly patients with psychiatric morbidity which was associated with a diagnosis of arthropathy (p = 0.009). From the meta-analysis (8 studies, 1387 patients) an increased risk of depression (RR:1.8, CI95% [1.3-2.5]) and anxiety (RR:1.9, CI95% [1.1-3.2]) was observed in acromegaly compared to NFPAs. CONCLUSION This study reveals a higher risk of psychiatric disorders in acromegaly, particularly depression and anxiety. Consequently, a need for increased psychiatric awareness in acromegaly is warranted.
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Affiliation(s)
| | - Christian Rosendal
- Department of Endocrinology, Aalborg University Hospital, Aalborg, Denmark.
| | - Emma H Christensen
- Department of Endocrinology, Aalborg University Hospital, Aalborg, Denmark
| | - Helga Beckmann
- Department of Endocrinology, Aalborg University Hospital, Aalborg, Denmark
| | | | - Amar Nikontovic
- Steno Diabetes Center North Denmark, Aalborg University Hospital, Aalborg, Denmark
| | - Gustav Bizik
- Department of Psychiatry, Aalborg University Hospital, Aalborg, Denmark
- Department of Clinical Medicine, Aalborg University, Aalborg, Denmark
| | - Peter Vestergaard
- Steno Diabetes Center North Denmark, Aalborg University Hospital, Aalborg, Denmark
| | - Jakob Dal
- Department of Endocrinology, Aalborg University Hospital, Aalborg, Denmark
- Steno Diabetes Center North Denmark, Aalborg University Hospital, Aalborg, Denmark
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Rasmussen JJ, Bulut Y, Brandt-Jacobsen N, Frystyk J, Albrethsen J, Thevis M, Jørgensen N, Schou M, Juul A, Kistorp C. Effects of letrozole therapy in former users of anabolic steroids: A randomized clinical trial. J Intern Med 2025; 297:113-116. [PMID: 39578999 DOI: 10.1111/joim.20040] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Key Words] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/24/2024]
Affiliation(s)
- Jon Jarløv Rasmussen
- Department of Nephrology and Endocrinology, Copenhagen University Hospital - Rigshospitalet, Copenhagen, Denmark
- Department of Internal Medicine 1, Holbæk Hospital, Holbæk, Denmark
| | - Yeliz Bulut
- Department of Nephrology and Endocrinology, Copenhagen University Hospital - Rigshospitalet, Copenhagen, Denmark
- Department of Clinical Medicine, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
| | - Niels Brandt-Jacobsen
- Department of Nephrology and Endocrinology, Copenhagen University Hospital - Rigshospitalet, Copenhagen, Denmark
- Department of Clinical Physiology and Nuclear Medicine, Copenhagen University Hospital - Rigshospitalet, Copenhagen, Denmark
| | - Jan Frystyk
- Department of Endocrinology, Odense University Hospital, Odense, Denmark
- Faculty of Health Sciences, University of Southern Denmark, Odense, Denmark
| | - Jakob Albrethsen
- Department of Growth and Reproduction, Copenhagen University Hospital - Rigshospitalet, Copenhagen, Denmark
- International Center for Research and Research Training in Endocrine Disruption of Male Reproduction and Child Health (EDMaRC), Copenhagen University Hospital - Rigshospitalet, Copenhagen, Denmark
| | - Mario Thevis
- Center for Preventive Doping Research, German Sport University, Cologne, Germany
| | - Niels Jørgensen
- Department of Growth and Reproduction, Copenhagen University Hospital - Rigshospitalet, Copenhagen, Denmark
- International Center for Research and Research Training in Endocrine Disruption of Male Reproduction and Child Health (EDMaRC), Copenhagen University Hospital - Rigshospitalet, Copenhagen, Denmark
| | - Morten Schou
- Department of Clinical Medicine, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
- Department of Cardiology, Herlev and Gentofte University Hospital, Herlev, Denmark
| | - Anders Juul
- Department of Clinical Medicine, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
- Department of Growth and Reproduction, Copenhagen University Hospital - Rigshospitalet, Copenhagen, Denmark
- International Center for Research and Research Training in Endocrine Disruption of Male Reproduction and Child Health (EDMaRC), Copenhagen University Hospital - Rigshospitalet, Copenhagen, Denmark
| | - Caroline Kistorp
- Department of Nephrology and Endocrinology, Copenhagen University Hospital - Rigshospitalet, Copenhagen, Denmark
- Department of Clinical Medicine, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
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Havnes IA, Henriksen HCB, Johansen PW, Bjørnebekk A, Neupane SP, Hisdal J, Seljeflot I, Wisløff C, Jørstad ML, McVeigh J, Jørgensen AP. Off-label use of clomiphene citrate to treat anabolic androgenic steroid induced hypogonadism upon cessation among men (CloTASH) - A pilot study protocol. MethodsX 2024; 13:102810. [PMID: 39022178 PMCID: PMC11253696 DOI: 10.1016/j.mex.2024.102810] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2024] [Accepted: 06/18/2024] [Indexed: 07/20/2024] Open
Abstract
Background Non-prescribed anabolic androgenic steroid (AAS) use is associated with AAS-induced hypogonadism (ASIH), and metabolic, cardiovascular, and mental health risks. Symptoms of ASIH (fatigue, depression, anxiety, sexual dysfunction) are hard to endure following cessation, but there is no consensus on whether endocrine treatment should be used to treat ASIH. This proof-of-concept study aims to explore safety of off-label clomiphene citrate therapy, whether the treatment will reduce the symptoms of androgen deficiency, and to study changes in health risks after cessation. Methods In this open-labeled non-randomized off-label hormone intervention pilot study, we shall include males with AAS dependence intending to cease use. The 16-week intervention included clomiphene citrate, transdermal testosterone gel for the first four weeks and optional human chorionic gonadotropin (hCG) from week 4 if low treatment response. Measures of physical and mental health will be examined from ongoing AAS use, during the intervention, and at 6- and 12 months post cessation. Change in self-reported symptoms of hypogonadism and other withdrawal symptoms will be compared with data from a group of men who ended AAS use temporarily without the medical intervention. The study may provide valuable clinical insights and may be used to inform the design of future intervention studies.
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Affiliation(s)
- Ingrid Amalia Havnes
- Division of Mental Health and Addiction, Oslo University Hospital, PO box 4959 Nydalen, Oslo 0424, Norway
- Institute of Clinical Medicine, Faculty of Medicine, University of Oslo, PO box 1171 Blindern, Oslo 0318, Norway
| | - Hans Christian Bordado Henriksen
- Institute of Clinical Medicine, Faculty of Medicine, University of Oslo, PO box 1171 Blindern, Oslo 0318, Norway
- Anabolic Androgenic Steroid Research Group, Section for Clinical Addiction Research, Division of Mental Health and Addiction, Oslo University Hospital, PO box 4959 Nydalen, Oslo 0424, Norway
| | - Per Wiik Johansen
- National Advisory Unit on Substance Use Disorder Treatment, Division of Mental Health and Addiction, Oslo University Hospital, PO box 4959 Nydalen, Oslo 0424, Norway
| | - Astrid Bjørnebekk
- Anabolic Androgenic Steroid Research Group, Section for Clinical Addiction Research, Division of Mental Health and Addiction, Oslo University Hospital, PO box 4959 Nydalen, Oslo 0424, Norway
| | - Sudan Prasad Neupane
- National Centre for Suicide Research and Prevention, Institute of Clinical Medicine, University of Oslo, Sognsvannsveien 21, Building 12, Oslo 0372, Norway
- Oral Health Centre of Expertise in Rogaland, Torgveien 21 B, Stavanger 4016, Norway
| | - Jonny Hisdal
- Institute of Clinical Medicine, Faculty of Medicine, University of Oslo, PO box 1171 Blindern, Oslo 0318, Norway
- Department of Vascular Surgery, Oslo University Hospital - Aker, Postboks 4959 Nydalen, Oslo 0424, Norway
| | - Ingebjørg Seljeflot
- Institute of Clinical Medicine, Faculty of Medicine, University of Oslo, PO box 1171 Blindern, Oslo 0318, Norway
- Center for Clinical Heart Research, Department of Cardiology, Oslo University Hospital - Ullevål, PO box 4954 Nydalen, Oslo 0424, Norway
| | - Christine Wisløff
- National Advisory Unit on Substance Use Disorder Treatment, Division of Mental Health and Addiction, Oslo University Hospital, PO box 4959 Nydalen, Oslo 0424, Norway
| | - Marie Lindvik Jørstad
- National Advisory Unit on Substance Use Disorder Treatment, Division of Mental Health and Addiction, Oslo University Hospital, PO box 4959 Nydalen, Oslo 0424, Norway
| | - Jim McVeigh
- Substance Use and Associated Behaviours Group, Manchester Metropolitan University, Geoffrey Manton Building, 4 Rosamond Street West, Manchester M15 6LL, United Kingdom
| | - Anders Palmstrøm Jørgensen
- Institute of Clinical Medicine, Faculty of Medicine, University of Oslo, PO box 1171 Blindern, Oslo 0318, Norway
- Section of Specialized Endocrinology, Department of Endocrinology, Oslo University Hospital - Rikshospitalet, PO box 4950 Nydalen, Oslo 0424, Norway
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Cangiano B, Bonomi M, Quinton R. Editorial: Functional acquired hypogonadotropic hypogonadism in males. Front Endocrinol (Lausanne) 2024; 15:1364634. [PMID: 38356954 PMCID: PMC10864649 DOI: 10.3389/fendo.2024.1364634] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/02/2024] [Accepted: 01/15/2024] [Indexed: 02/16/2024] Open
Affiliation(s)
- Biagio Cangiano
- Department of Medical Biotechnology and Translational Medicine, University of Milan, Milan, Italy
- Department of Endocrine and Metabolic Medicine, IRCCS Istituto Auxologico Italiano, Milan, Italy
| | - Marco Bonomi
- Department of Medical Biotechnology and Translational Medicine, University of Milan, Milan, Italy
- Department of Endocrine and Metabolic Medicine, IRCCS Istituto Auxologico Italiano, Milan, Italy
| | - Richard Quinton
- Department of Endocrinology, Diabetes & Metabolism, Newcastle-upon-Tyne Hospitals, Newcastle-upon-Tyne, United Kingdom
- Translational & Clinical Research Institute, University of Newcastle-upon-Tyne, Newcastle-upon-Tyne, United Kingdom
- Department of Metabolism, Digestion & Reproduction, Imperial College London, London, United Kingdom
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Skauen JE, Pallesen S, Bjørnebekk A, Chegeni R, Syvertsen A, Petróczi A, Sagoe D. Prevalence and correlates of androgen dependence: a meta-analysis, meta-regression analysis and qualitative synthesis. Curr Opin Endocrinol Diabetes Obes 2023; 30:309-323. [PMID: 37410490 DOI: 10.1097/med.0000000000000822] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 07/07/2023]
Abstract
PURPOSE OF REVIEW To investigate the prevalence and correlates of androgen dependence among users. A meta-analysis, meta-regression analysis, and qualitative synthesis were conducted based on a systematic literature search in Google Scholar, ISO Web of Science, PsycNET, and PubMed. RECENT FINDINGS Twenty-six studies were included in the review and 18 studies ( N = 1782) in the statistical analysis. The overall lifetime androgen dependence prevalence was 34.4% [95% confidence interval (CI): 27.8-41.7, Q = 113.1, I2 = 85.0, P < 0.001]. Although males (36.1%, P < 0.001) and females (37.0%, P = 0.188) did not differ ( Q = 0.0, P = 0.930) in dependence prevalence, controlling for other study characteristics, higher study male sample proportion was related to higher dependence prevalence. Combined interview and questionnaire assessments showed higher prevalence compared to interviews only. Publications from 1990-1999 generated higher prevalence compared to 2000-2009 and 2010-2023 publications. Dependents were associated with a wide array of demographic inequalities, and biophysical, cognitive, emotional, and psychosocial problems. SUMMARY One of three persons who initiate androgen use experiences dependence along with various serious disorders. Androgen use and dependence should be considered an important public health issue requiring targeted health interventions.
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Affiliation(s)
- Jenny Eriksrød Skauen
- Department of Psychosocial Science
- Human Enhancement and Body Image Lab (HEBI Lab), Addiction Research Group, University of Bergen, Bergen
| | - Ståle Pallesen
- Department of Psychosocial Science
- Human Enhancement and Body Image Lab (HEBI Lab), Addiction Research Group, University of Bergen, Bergen
| | - Astrid Bjørnebekk
- Anabolic Androgenic Steroid Research Group, Section for Clinical Addiction Research, Division of Mental Health and Addiction, Oslo University Hospital
| | - Razieh Chegeni
- Human Enhancement and Body Image Lab (HEBI Lab), Addiction Research Group, University of Bergen, Bergen
- PROMENTA Research Center, Department of Psychology, University of Oslo, Oslo, Norway
| | - André Syvertsen
- Department of Psychosocial Science
- Human Enhancement and Body Image Lab (HEBI Lab), Addiction Research Group, University of Bergen, Bergen
| | - Andrea Petróczi
- School of Life Sciences, Pharmacy and Chemistry, Faculty of Health, Science, Social Care and Education, Kingston University, London, UK
- Institute of Health Promotion and Sport Sciences, Eötvös Loránd University (ELTE), Budapest, Hungary
| | - Dominic Sagoe
- Department of Psychosocial Science
- Human Enhancement and Body Image Lab (HEBI Lab), Addiction Research Group, University of Bergen, Bergen
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Grant B, Kean J, Vali N, Campbell J, Maden L, Bijral P, Dhillo WS, McVeigh J, Quinton R, Jayasena CN. The use of post-cycle therapy is associated with reduced withdrawal symptoms from anabolic-androgenic steroid use: a survey of 470 men. Subst Abuse Treat Prev Policy 2023; 18:66. [PMID: 37951896 PMCID: PMC10640727 DOI: 10.1186/s13011-023-00573-8] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2023] [Accepted: 10/20/2023] [Indexed: 11/14/2023] Open
Abstract
BACKGROUND Anabolic-androgenic steroids (AAS) mimic the effects of testosterone and may include testosterone itself; they are used for body enhancement within the general population. AAS use has been linked with increased mortality, cardiovascular disease, mental health disorders, and infertility. AAS-induced hypogonadism can persist for an uncertain time period despite cessation, during which men may report physical and neuropsychiatric symptoms. In an attempt to mitigate these symptoms and expedite testicular recovery, many men self-administer post-cycle-therapy (PCT), typically involving human chorionic gonadotrophin (hCG) and selective oestrogen receptor modulators (SERMs), which are known to potently stimulate testicular function. However, this practice has no objective evidence of effectiveness to lessen the severity or duration of hypogonadal symptoms. METHODS An anonymous survey of four-hundred-and-seventy men using AAS explored the symptoms they experienced when ceasing AAS use; the effect of PCT on relieving their symptoms, and their perceived role for health service support. RESULTS The majority of respondents were white, aged 18-30 years old, and working in skilled manual work. 51.7% (n = 243) reported no issues with AAS use, but 35.3% reported increased aggression. 65.1% (n = 306) of respondents had attempted AAS cessation and 95.1% of these experienced at least one symptom upon AAS cessation. Low mood, tiredness and reduced libido were reported in 72.9%, 58.5% and 57.0% of men stopping AAS use, respectively, with only 4.9% reporting no symptoms. PCT had been used by 56.5% of respondents with AAS cessation and mitigated cravings to restart AAS use, withdrawal symptoms and suicidal thoughts by 60%, 60% and 50%, respectively. The effect of stopping AAS on body composition and recovery of testosterone or fertility was a concern in 60.5% and 52.4%, respectively. Most respondents felt PCT should be prescribed under medical supervision in the community. CONCLUSIONS Our survey suggests that the majority of men stopping AAS use are using some form of PCT. Some self-reported symptoms of AAS-induced hypogonadism such as cravings to restart AAS use reduce by 60% and suicidal thoughts reduce by 50%. These individuals are concerned about the negative effect of AAS use and cessation. This study provides crucial information for planning future research to evaluate the effects of PCT on symptoms when men stop AAS use.
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Affiliation(s)
- Bonnie Grant
- Section of Investigative Medicine, Commonwealth Building, Imperial College London, Hammersmith Hospital, Du Cane Road, London, W12 0NN, UK
| | - Joseph Kean
- Bradford Metropolitan District Council, Britannia House, Hall Ings, Bradford, BD1 1HX, UK
| | | | - John Campbell
- Glasgow Alcohol & Drug Recovery Services, NHS Greater Glasgow & Clyde, Glasgow, Scotland, UK
| | | | | | - Waljit S Dhillo
- Section of Investigative Medicine, Commonwealth Building, Imperial College London, Hammersmith Hospital, Du Cane Road, London, W12 0NN, UK
| | - James McVeigh
- Department of Sociology, Manchester Metropolitan University, 4 Rosamund Street West, Manchester, M15 6LL, UK
| | - Richard Quinton
- Department of Endocrinology, Diabetes & Metabolism, Newcastle-Upon-Tyne Hospitals NHS Foundation Trust & Translational & Clinical Research Institute, University of Newcastle-Upon-Tyne, Newcastle, UK
| | - Channa N Jayasena
- Section of Investigative Medicine, Commonwealth Building, Imperial College London, Hammersmith Hospital, Du Cane Road, London, W12 0NN, UK.
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Rizzuti A, Alvarenga C, Stocker G, Fraga L, Santos HO. Early Pharmacologic Approaches to Avert Anabolic Steroid-induced Male Infertility: A Narrative Review. Clin Ther 2023; 45:e234-e241. [PMID: 37806813 DOI: 10.1016/j.clinthera.2023.09.003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2023] [Revised: 08/23/2023] [Accepted: 09/03/2023] [Indexed: 10/10/2023]
Abstract
PURPOSE To review the impact of testosterone and other androgenic-anabolic steroids (AASs) on male fertility, exploring potential drugs that can be used to preserve or restore male fertility upon AAS use or prior contact. METHODS A review was performed to provide a unifying clinical link between drugs used to preserve or restore male fertility (ie, clomiphene citrate, human chorionic gonadotropin, selective estrogen receptor modulators, recombinant luteinizing and follicle-stimulating hormones, and human menopausal gonadotrophin) in the context of AAS-induced infertility and related aspects. FINDINGS Human chorionic gonadotropin (125-500 IU every other day), clomiphene citrate (12.5-50 mg/d), recombinant luteinizing hormone (125-500 IU every other day), recombinant follicle-stimulating hormone (75-150 IU 1-3×/wk), and human menopausal gonadotrophin (75-150 IU 1-3×/wk) are promising early pharmacologic approaches to avert AAS-induced male infertility. Additionally, a full partner assessment is crucial to the success of a couple planning to have children. The partner's age and gynecopathies must be considered. Egg or sperm cryopreservation can also be alternatives for future fertility. Reinforcing AAS cessation is imperative to achieving better success in misusers. IMPLICATIONS The exponential increase in AAS misuse raises concerns about the impact on male fertility. This review suggests that gonadotropin analogs and selective androgen receptor modulators (clomiphene citrate) are viable approaches to early preserve or restore fertility in men on AAS use or with previous contact. However, proper standardization of doses and combinations is required and hence physicians should also be aware of patients' and partners' fertility.
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Affiliation(s)
- André Rizzuti
- School of Medicine, Estácio de Sá University (UNESA), Rio de Janeiro, RJ, Brazil
| | - Conrado Alvarenga
- School of Medicine, Department of Urology, University of Sao Paulo (USP), Sao Paulo, Brazil
| | - Gustavo Stocker
- School of Medicine, University Center Assis Gurgacz Foundation (FAG), Cascavel, PR, Brazil
| | - Lucas Fraga
- School of medicine, Santa Casa da misericordia de Vitorica (EMESCAM), Vitória, ES, Brazil
| | - Heitor O Santos
- School of Medicine, Federal University of Uberlandia (UFU), Uberlandia, MG, Brazil.
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