Unconventional Applications of Semaglutide and Tirzepatide: From Oncology to Human Reproduction
Abstract
Semaglutide and tirzepatide, glucagon-like peptide-1 (GLP-1) and dual glucose-dependent insulinotropic polypeptide (GIP)/GLP-1 receptor agonists, respectively, have revolutionized the management of type 2 diabetes mellitus and obesity. Beyond their established metabolic indications, emerging preclinical and clinical evidence suggests these incretin-based therapies exert pleiotropic effects across multiple organ systems through mechanisms extending beyond glycemic control and weight reduction. This comprehensive review synthesizes current evidence for unconventional applications of semaglutide and tirzepatide across five distinct therapeutic domains: oncology, psychiatry and addiction medicine, orthopedics, aesthetic medicine, and human reproduction. In oncology, both agents demonstrate antitumor activity primarily through immune and metabolic reprogramming rather than direct cytotoxicity, with promising signals in pancreatic, thyroid, breast, and colorectal cancers. In psychiatry, modulation of mesolimbic dopamine reward pathways and GABAergic neurotransmission underlies robust preclinical and observational evidence for reducing alcohol use disorder, substance use, and binge-eating behaviors. Orthopedic applications include clinically meaningful improvements in knee osteoarthritis pain and function, though bone health signals remain mixed. Aesthetic medicine faces the dual challenge of managing GLP-1 receptor agonist-associated facial volume loss while exploring therapeutic…
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