How fast will I lose weight on GLP-1s and is it sustainable?

GLP-1 medications are a game-changer for weight loss for many people, but it's important to have realistic expectations about the pace and what "sustainable" truly means.

How Fast Will You Lose Weight?

Weight loss on GLP-1s is typically gradual and sustained over time, rather than a rapid drop. It's not a "get thin quick" scheme, which is actually a good thing for long-term health!

Here's what you can generally expect:

• Initial Phase (First 3-6 months): You might start to see a more noticeable drop in weight as your body adjusts to the medication and your appetite signals change.
• Peak Effectiveness (6 months to 1.5 years): This is often when people achieve their maximum weight loss.
• Average Weight Loss: Clinical trials show significant results:
  • Wegovy (semaglutide): On average, people lost about 15% of their body weight over 68 weeks (around 1.5 years) when combined with lifestyle changes. For someone starting at 200 lbs, that's 30 lbs.
  • Zepbound (tirzepatide): This medication has shown even higher efficacy. Participants in trials lost an average of 20-22.5% of their body weight over 72 weeks (just over 1.5 years). For someone starting at 200 lbs, that could be 40-45 lbs.

Why it's not super fast: These medications work by slowing gastric emptying, increasing feelings of fullness, and reducing appetite. Your doctor will also start you on a low dose and gradually increase it (a process called titration) to minimize side effects, which means the full weight-loss effect isn't immediate.

Is it Sustainable?

The answer to sustainability is yes, as long as you continue taking the medication and maintain healthy lifestyle habits.

Here's why:

1. Ongoing Medication is Key: GLP-1s treat obesity as a chronic disease. Just like someone with high blood pressure might need to take medication long-term to manage their condition, people using GLP-1s often need to continue them to sustain weight loss. If you stop the medication, your appetite can return to its previous levels, and weight regain is very common.
2. It Changes Your Body's Set Point: These medications help to reset some of the hormonal signals that drive hunger and weight gain, making it easier for your body to maintain a lower weight. Without the medication, those signals often revert.
3. Lifestyle Still Matters: While GLP-1s are incredibly effective, they work best when combined with healthy eating habits and regular physical activity. These habits:
   • Maximize weight loss: They can help you lose even more weight than with medication alone.
   • Improve overall health: Beyond just weight, diet and exercise contribute to cardiovascular health, mood, energy levels, and more.
   • Support long-term maintenance: Developing sustainable healthy habits alongside the medication prepares you for long-term success.

In summary:

• You can expect significant and sustained weight loss on GLP-1s like Wegovy (around 15% body weight) and Zepbound (around 20-22.5% body weight) over about 1.5 years.
• The weight loss is sustainable as long as you continue taking the medication as prescribed and integrate healthy eating and exercise into your routine. It's a treatment for a chronic condition, not a temporary fix.

It's crucial to discuss these medications with a healthcare provider to see if they are appropriate for you, understand the potential side effects, and develop a comprehensive weight management plan.