{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,10,28]],"date-time":"2026-10-28T03:02:04Z","timestamp":1793156524923,"version":"4.5.0"},"reference-count":112,"publisher":"MDPI AG","issue":"3","license":[{"start":{"date-parts":[[2025,7,28]],"date-time":"2025-07-28T00:00:00Z","timestamp":1753660800000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Medicines"],"abstract":"<jats:p>Obesity is a growing global health concern with widespread impacts on physical, psychological, and social well-being. Clinically, it is a major driver of type 2 diabetes (T2D), cardiovascular disease (CVD), non-alcoholic fatty liver disease (NAFLD), and cancer, reducing life expectancy by 5\u201320 years and imposing a staggering economic burden of USD 2 trillion annually (2.8% of global GDP). Despite its significant health and socioeconomic impact, earlier obesity medications, such as fenfluramine, sibutramine, and orlistat, fell short of expectations due to limited effectiveness, serious side effects including valvular heart disease and gastrointestinal issues, and high rates of treatment discontinuation. The advent of glucagon-like peptide-1 (GLP-1) receptor agonists (e.g., semaglutide, tirzepatide) has revolutionized obesity management. These agents demonstrate unprecedented efficacy, achieving 15\u201325% mean weight loss in clinical trials, alongside reducing major adverse cardiovascular events by 20% and T2D incidence by 72%. Emerging therapies, including oral GLP-1 agonists and triple-receptor agonists (e.g., retatrutide), promise enhanced tolerability and muscle preservation, potentially bridging the efficacy gap with bariatric surgery. However, challenges persist. High costs, supply shortages, and unequal access pose significant barriers to the widespread implementation of obesity treatment, particularly in low-resource settings. Gastrointestinal side effects and long-term safety concerns require close monitoring, while weight regain after medication discontinuation emphasizes the need for ongoing adherence and lifestyle support. This review highlights the transformative potential of incretin-based therapies while advocating for policy reforms to address cost barriers, equitable access, and preventive strategies. Future research must prioritize long-term cardiovascular outcome trials and mitigate emerging risks, such as sarcopenia and joint degeneration. A multidisciplinary approach combining pharmacotherapy, behavioral interventions, and systemic policy changes is critical to curbing the obesity epidemic and its downstream consequences.<\/jats:p>","DOI":"10.3390\/medicines12030019","type":"journal-article","created":{"date-parts":[[2025,7,28]],"date-time":"2025-07-28T14:05:47Z","timestamp":1753711547000},"page":"19","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":41,"title":["Obesity: Clinical Impact, Pathophysiology, Complications, and Modern Innovations in Therapeutic Strategies"],"prefix":"10.3390","volume":"12","author":[{"given":"Mohammad Iftekhar","family":"Ullah","sequence":"first","affiliation":[{"name":"Department of Medicine, University of Mississippi Medical Center, 2500 N State St., Jackson, MS 39216, USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Sadeka","family":"Tamanna","sequence":"additional","affiliation":[{"name":"Department of Medicine, University of Mississippi Medical Center, 2500 N State St., Jackson, MS 39216, USA"},{"name":"G. V. (Sonny) Montgomery VA Medical Center, 1500 E Woodrow Wilson Ave., Jackson, MS 39216, USA"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"1968","published-online":{"date-parts":[[2025,7,28]]},"reference":[{"key":"ref_1","unstructured":"World Health Organization (2025, May 05). Obesity and Overweight: Key Facts. Available online: https:\/\/www.who.int\/news-room\/fact-sheets\/detail\/obesity-and-overweight."},{"key":"ref_2","doi-asserted-by":"crossref","first-page":"2440","DOI":"10.1056\/NEJMsa1909301","article-title":"Projected U.S. State-Level Prevalence of Adult Obesity and Severe Obesity","volume":"381","author":"Ward","year":"2019","journal-title":"N. Engl. J. Med."},{"key":"ref_3","first-page":"141","article-title":"Valvular heart disease associated with fenfluramine and phentermine","volume":"11","author":"Connolly","year":"1997","journal-title":"N. Engl. J. 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