Semaglutide is a glucagon-like peptide-1 (GLP-1) receptor agonist that originated from the natural hormone GLP-1, which is involved in glucose metabolism and appetite regulation. Researchers primarily study semaglutide for its potential benefits in managing type 2 diabetes and obesity. Key findings from clinical trials indicate that semaglutide significantly reduces glycated hemoglobin levels and body weight compared to placebo, with some studies suggesting it may offer cardiovascular benefits as well. Additionally, head-to-head comparisons with other agents like tirzepatide have shown that semaglutide is effective, though tirzepatide may lead to greater weight loss. Current research continues to explore its long-term safety profile and efficacy in diverse populations, including those with obesity-related complications.