Weight Loss and Maintenance Related to the Mechanism of Action of Glucagon-Like Peptide 1 Receptor Agonists.

Obesity is a growing public health issue that increases the risk of developing heart disease, type 2 diabetes, and osteoarthritis. Weight loss can reduce the risk of developing these health problems but, despite this, levels of obesity remain high. Achieving and maintaining weight loss is challenging for many individuals. There is therefore a need for some patients to take medications to help them lose weight and prevent weight regain. Glucagon-like peptide 1 receptor agonists (GLP-1RAs) are a type of medication originally developed to treat type 2 diabetes, but are now being used for the treatment of obesity because they are effective at helping people to lose weight. One GLP-1RA, liraglutide, has been approved to treat obesity, and another, semaglutide, is in clinical trials. GLP-1RAs work by reducing the appetite and feelings of hunger, slowing the release of food from the stomach, and increasing feelings of fullness after eating. Most people can tolerate GLP-1RAs well. The most common side effects (nausea, vomiting, and diarrhea) are usually mild and occur in the first few weeks of treatment, reducing over time. Because of the difficulties many people face in maintaining weight loss, lifelong treatment may be needed. In clinical trials, GLP-1RAs were well tolerated and effective at helping people prevent weight regain, and may be a good option for long-term weight control and lowering patients' chances of serious health problems.