GLP-1 (glucagon-like peptide-1) is a naturally occurring hormone in the body that plays a key role in regulating blood sugar, appetite, and digestion, and GLP-1–based medications are now widely used for weight management and metabolic health. These medications work by mimicking the action of the GLP-1 hormone, which signals the brain that you are full, slows gastric emptying so food stays in the stomach longer, and helps regulate insulin and glucagon release to keep blood sugar levels stable. 

One of the most notable benefits of GLP-1 therapy is significant, sustained weight loss when combined with healthy lifestyle habits. Many patients experience reduced hunger, fewer cravings, improved portion control, and a healthier relationship with food. Beyond weight loss, GLP-1 medications may improve insulin sensitivity, lower A1C levels in patients with insulin resistance or type 2 diabetes, reduce cardiovascular risk factors such as elevated blood pressure and cholesterol, and support overall metabolic health. Some individuals also report increased energy, improved confidence, and better long-term adherence compared to traditional diet-only approaches. 

As with any medication, GLP-1 therapies can have side effects, most of which are gastrointestinal and tend to be mild to moderate, especially during the early dose-escalation phase. Common side effects include nausea, vomiting, diarrhea, constipation, bloating, reflux, and decreased appetite. These symptoms often improve as the body adjusts, particularly when doses are increased slowly and patients follow nutrition guidelines such as eating smaller meals, prioritizing protein, and staying well hydrated. Less common side effects may include fatigue, dizziness, or headache. Rare but more serious risks can include gallbladder issues related to rapid weight loss, pancreatitis, or worsening of pre-existing gastrointestinal conditions, which is why proper medical screening and ongoing monitoring are essential. 

GLP-1 therapy is not appropriate for everyone, including individuals with certain thyroid conditions or specific medical histories, and it should always be prescribed and supervised by a qualified healthcare provider. When used responsibly under medical guidance, GLP-1 medications can be a powerful tool to support weight loss, improve metabolic health, and help patients achieve long-term, sustainable results.

Valerie Erdman D.O., FACOI 

Internal Medicine Hospitalist

Board Certified Internal Medicine