Verbatim response from Perplexity
On GLP-1 medications (such as semaglutide/Ozempic/Wegovy and tirzepatide/Mounjaro), most people lose 1–2 pounds per week, with clinical trials showing 15%–25% total body weight loss after about 1 year when combined with a healthy diet and exercise[1][4][5].
Sustainability depends on continued use and lifestyle changes: weight loss is sustainable while you stay on the medication, but most people regain weight rapidly after stopping—about two-thirds of lost weight within 1.5–2 years, and faster than after behavioral weight-loss programs alone[1][2][6].
| Factor | With GLP-1 (continued use) | After stopping GLP-1 |
|---|---|---|
| Avg. weekly loss | 1–2 lbs[5] | 0.4–0.8 lbs/month regain[2] |
| 1-year total loss | 15%–25%[4] | Return to ~baseline by 18 months[2] |
| Long-term maintenance | Possible 2–3 years with continued use[4] | ~67% regain without lifestyle habits[6] |
Key to lasting results: GLP-1s are not a quick fix but work best alongside balanced nutrition, regular physical activity (especially strength training), behavioral changes, and ongoing medical supervision[1][4][6]. Newer research shows that behavioral support during treatment increases weight loss but doesn’t slow regain after stopping, meaning developing sustainable habits is critical for long-term success[2][6].
Brands to consider:
- Wegovy (semaglutide): 14.9% loss at 68 weeks, sustainable 2 years with continued use[4]
- Mounjaro (tirzepatide): 20.9% loss at 72 weeks, sustained 3 years in extensions[4]
- Ozempic (semaglutide): Similar to Wegovy, with 10% loss in 1/3 of non-diabetic patients[4]
Recommendation: Start with a low-dose maintenance period after peak loss to build habits and reduce side effects, then consider microdosing or long-term use if weight creep occurs[5][7]. Always consult an endocrinologist or obesity specialist for personalized dosing and monitoring.