DOI QR코드

DOI QR Code

Ethical Challenges in Obesity Treatment: Efficacy, Safety, and the Balance of Risk

비만 치료의 윤리적 쟁점: 효과, 안전성, 그리고 위험의 균형

  • Jinseung Kim (Department of Family Medicine, Busan Paik Hospital, Inje University College of Medicine)
  • 김진승 (인제대학교 의과대학 부산백병원 가정의학과)
  • Received : 2026.05.13
  • Accepted : 2026.06.03
  • Published : 2026.06.30

Abstract

Obesity is a chronic disease associated with increased risks of metabolic disorders, cardiovascular disease, cancer, impaired quality of life, and premature mortality. Recent advances in anti-obesity pharmacotherapy, particularly glucagon-like peptide-1 (GLP-1) receptor agonists and dual GLP-1/glucose-dependent insulinotropic polypeptide receptor agonists, have substantially improved weight-loss outcomes and demonstrated significant cardiometabolic benefits. These developments have shifted the treatment paradigm from a focus on weight reduction to broader improvements in health outcomes. However, the history of anti-obesity medications highlights the importance of balancing treatment efficacy with long-term safety. Several agents, including fenfluramine, sibutramine, and lorcaserin, were withdrawn because of serious adverse events identified during clinical use or post-marketing surveillance. In addition, the emergence of highly effective pharmacotherapies has raised important ethical questions regarding obesity medicalization, lifelong pharmacotherapy, treatment accessibility, health equity, obesity stigma, and the role of social determinants of health. Issues related to patient autonomy and shared decision-making have also become increasingly relevant in the GLP-1 era. This review examines the evolution of anti-obesity treatments, the changing risk-benefit balance of contemporary obesity management, and the major ethical challenges associated with modern obesity care. A balanced approach integrating clinical effectiveness, long-term safety, patient-centered decision-making, and social responsibility is essential to achieve sustainable and equitable obesity treatment.

Keywords

References

  1. World Health Organization. Obesity and overweight [Internet]. World Health Organization. 2025 [cited 2026 May 28]; Available from: https://www.who.int/news-room/fact-sheets/detail/obesity-and-overweight
  2. Nam GE, Kim YH, Han K, et al. Obesity fact sheet in Korea, 2019: prevalence of obesity and abdominal obesity from 2009 to 2018 and social factors. J Obes Metab Syndr 2020;29:124-32. https://doi.org/10.7570/jomes20058
  3. Guh DP, Zhang W, Bansback N, Amarsi Z, Birmingham CL, Anis AH. The incidence of co-morbidities related to obesity and overweight: a systematic review and meta-analysis. BMC Public Health 2009;9:88. https://doi.org/10.1186/1471-2458-9-88
  4. Sarwer DB, Polonsky HM. The psychosocial burden of obesity. Endocrinol Metab Clin North Am 2016;45:677-88. https://doi.org/10.1016/j.ecl.2016.04.016
  5. Dai H, Alsalhe TA, Chalghaf N, Riccò M, Bragazzi NL, Wu J. The global burden of disease attributable to high body mass index in 195 countries and territories, 1990-2017: an analysis of the Global Burden of Disease Study. PLoS Med 2020;17:e1003198. https://doi.org/10.1371/journal.pmed.1003198
  6. Rosenstock J, Frias J, Jastreboff AM, et al. Retatrutide, a GIP, GLP-1 and glucagon receptor agonist, for people with type 2 diabetes: a randomised, double-blind, placebo and active-controlled, parallel-group, phase 2 trial conducted in the USA. Lancet 2023;402:529-44. https://doi.org/10.1016/S0140-6736(23)01053-X
  7. Frias JP, Hsia S, Eyde S, et al. Efficacy and safety of oral orforglipron in patients with type 2 diabetes: a multicentre, randomised, dose-response, phase 2 study. Lancet 2023;402:472-83. https://doi.org/10.1016/S0140-6736(23)01302-8
  8. Connolly HM, Crary JL, McGoon MD, et al. Valvular heart disease associated with fenfluramine-phentermine. N Engl J Med 1997;337:581-8. https://doi.org/10.1056/NEJM199708283370901
  9. Glazer G. Long-term pharmacotherapy of obesity 2000: a review of efficacy and safety. Arch Intern Med 2001;161:1814-24. https://doi.org/10.1001/archinte.161.15.1814
  10. Christensen R, Kristensen PK, Bartels EM, Bliddal H, Astrup A. Efficacy and safety of the weight-loss drug rimonabant: a meta-analysis of randomised trials. Lancet 2007;370:1706-13. https://doi.org/10.1016/S0140-6736(07)61721-8
  11. James WP, Caterson ID, Coutinho W, et al. Effect of sibutramine on cardiovascular outcomes in overweight and obese subjects. N Engl J Med 2010;363:905-17. https://doi.org/10.1056/NEJMoa1003114
  12. Bohula EA, Wiviott SD, McGuire DK, et al. Cardiovascular safety of lorcaserin in overweight or obese patients. N Engl J Med 2018;379:1107-17. https://doi.org/10.1056/NEJMoa1808721
  13. Sharretts J, Galescu O, Gomatam S, Andraca-Carrera E, Hampp C, Yanoff L. Cancer risk associated with lorcaserin - The FDA's review of the CAMELLIA-TIMI 61 trial. N Engl J Med 2020;383:1000-2. https://doi.org/10.1056/NEJMp2003873
  14. Apovian CM, Aronne LJ, Bessesen DH, et al. Pharmacological management of obesity: an endocrine society clinical practice guideline. J Clin Endocrinol Metab 2015;100:342-62. https://doi.org/10.1210/jc.2014-3415
  15. Garvey WT, Mechanick JI, Brett EM, et al. American Association of Clinical Endocrinologists and American College of Endocrinology Comprehensive Clinical Practice Guidelines for medical care of patients with obesity. Endocr Pract 2016;22(Suppl 3):1-203. https://doi.org/10.4158/EP161365.GL
  16. American College of Cardiology/American Heart Association Task Force on Practice Guidelines, Obesity Expert Panel, 2013. Expert panel report: guidelines (2013) for the management of overweight and obesity in adults. Obesity (Silver Spring) 2014;22(Suppl 2):S41-410. https://doi.org/10.1002/oby.v22.S2
  17. Buscemi S, Verga S, Tranchina MR, Cottone S, Cerasola G. Effects of hypocaloric very-low-carbohydrate diet vs. Mediterranean diet on endothelial function in obese women. Eur J Clin Invest 2009;39:339-47. https://doi.org/10.1111/eci.2009.39.issue-5
  18. Kim BY, Kang SM, Kang JH, et al. 2020 Korean Society for the Study of Obesity Guidelines for the management of obesity in Korea. J Obes Metab Syndr 2021;30:81-92. https://doi.org/10.7570/jomes21022
  19. Ashutosh K, Methrotra K, Fragale-Jackson J. Effects of sustained weight loss and exercise on aerobic fitness in obese women. J Sports Med Phys Fitness 1997;37:252-7.
  20. Dengel DR, Hagberg JM, Coon PJ, Drinkwater DT, Goldberg AP. Effects of weight loss by diet alone or combined with aerobic exercise on body composition in older obese men. Metabolism 1994;43:867-71. https://doi.org/10.1016/0026-0495(94)90268-2
  21. Kim KB, Kim K, Kim C, et al. Effects of exercise on the body composition and lipid profile of individuals with obesity: a systematic review and meta-analysis. J Obes Metab Syndr 2019;28:278-94. https://doi.org/10.7570/jomes.2019.28.4.278
  22. Wilding JPH, Batterham RL, Calanna S, et al. Once-weekly semaglutide in adults with overweight or obesity. N Engl J Med 2021;384:989-1002. https://doi.org/10.1056/NEJMoa2032183
  23. Jastreboff AM, Aronne LJ, Ahmad NN, et al. Tirzepatide once weekly for the treatment of obesity. N Engl J Med 2022;387:205-16. https://doi.org/10.1056/NEJMoa2206038
  24. Lincoff AM, Brown-Frandsen K, Colhoun HM, et al. Semaglutide and cardiovascular outcomes in obesity without diabetes. N Engl J Med 2023;389:2221-32. https://doi.org/10.1056/NEJMoa2307563
  25. Klitzman R, Greenberg H. Anti-obesity medications: ethical, policy, and public health concerns. Hastings Cent Rep 2024,54:6-10.
  26. Wharton S, Lau DCW, Vallis M, et al. Obesity in adults: a clinical practice guideline. CMAJ 2020;192:E875-91. https://doi.org/10.1503/cmaj.191707
  27. Eisenberg D, Shikora SA, Aarts E, et al. 2022 American Society of Metabolic and Bariatric Surgery (ASMBS) and International Federation for the Surgery of Obesity and Metabolic Disorders (IFSO) indications for metabolic and bariatric surgery. Obes Surg 2023:33:3-14. https://doi.org/10.1007/s11695-022-06332-1
  28. Rubino F, Puhl RM, Cummings DE, et al. Joint international consensus statement for ending stigma of obesity. Nat Med 2020;26:485-97. https://doi.org/10.1038/s41591-020-0803-x
  29. Swinburn BA, Sacks G, Hall KD, et al. The global obesity pandemic: shaped by global drivers and local environments. Lancet 2011;378:804-14. https://doi.org/10.1016/S0140-6736(11)60813-1
  30. Rubino D, Abrahamsson N, Davies M, et al. Effect of continued weekly subcutaneous semaglutide vs placebo on weight loss maintenance in adults with overweight or obesity: the STEP4 randomized clinical trial. JAMA 2021;325:1414-25. https://doi.org/10.1001/jama.2021.3224
  31. Solar O, Irwin A. A conceptual framework for action on the social determinants of health. Social determinants of health discussion paper 2 (policy and practice). Geneva: World Health Organization; 2010.
  32. Morton JM, Brethauer SA, DeMaria EJ, Kahan S, Hutter MM. Quality in obesity treatment. Cham: Springer; 2019.