GLP-1 Medications for Weight Loss
How semaglutide and other GLP-1 agonists work, who qualifies, and what to expect.
Overview
GLP-1 receptor agonists — including semaglutide (Ozempic, Wegovy) and tirzepatide (Mounjaro, Zepbound) — represent the most significant advance in obesity medicine in decades. Originally developed for type 2 diabetes, these medications work by mimicking gut hormones that regulate appetite, slow gastric emptying, and reduce food cravings. Clinical trials show average weight loss of 15–22% of body weight — results previously only seen with bariatric surgery.
Key Points
- Semaglutide (Wegovy) produces average weight loss of 15% of body weight over 68 weeks in clinical trials.
- Tirzepatide (Zepbound) — a dual GLP-1/GIP agonist — produces average weight loss of up to 22% of body weight.
- GLP-1 medications are FDA-approved for adults with BMI ≥30, or ≥27 with a weight-related condition.
- Common side effects are gastrointestinal: nausea, vomiting, constipation — usually improve over time.
- Weight regain is common after stopping — these medications work best as part of a long-term management plan.
Signs & Symptoms
- Indicated for: BMI ≥30, or BMI ≥27 with hypertension, type 2 diabetes, sleep apnea, or high cholesterol
- Ideal for patients who have not achieved adequate weight loss with diet and exercise alone
- Particularly beneficial for patients with type 2 diabetes or prediabetes alongside obesity
- Appropriate for patients with cardiovascular disease who need weight reduction
- Not recommended during pregnancy or for patients with a personal or family history of medullary thyroid cancer
Causes & Risk Factors
- Obesity driven by hormonal dysregulation of appetite and satiety signals
- Insulin resistance and metabolic syndrome that make weight loss difficult without medical support
- Failed attempts at sustained weight loss through diet and exercise alone
- Weight-related comorbidities that increase medical urgency for weight reduction
- Genetic predisposition to obesity and altered GLP-1 signaling
Treatment Options
When to See a Doctor
Schedule a weight management consultation to find out if a GLP-1 medication is right for you. We will review your health history, current medications, and goals to determine the best approach. Insurance coverage varies — we will help you navigate your options.
This article is for educational purposes only and does not constitute medical advice. Please consult a Lemon-AID Medical Management provider for diagnosis and personalized treatment.