What happens after you stop GLP-1s

Losing weight with GLP-1s isn’t exactly “easy.”

For some, it may be easier than the alternative: dealing with constant thoughts about food and hunger, white-knuckling smaller portions, and restricting comfort foods.

But it still takes work.

People on GLP-1s have to manage side effects, build new eating and activity habits, budget for a costly medication, go through awkward wardrobe transitions, and deal with the ongoing stigma of taking a drug to lose weight.

When you finally get the results you’re looking for, you might wonder whether to continue the medication.

“If I go off my GLP-1 medication, what will happen to my body?”

A large research review set out to measure exactly that.

Along with a hefty dose of reality—yes, the weight does tend to come back—there are some practical things to consider.

How the study worked

Researchers at the University of Oxford pooled the results of 37 studies involving 9,341 adults with overweight or obesity.

This was a systematic review and meta-analysis: researchers gathered relevant studies and combined their results to look at the bigger picture.

Each study followed people who took a weight-loss medication for at least eight weeks, then tracked them for at least four weeks after they stopped. Some studies included medication use lasting more than three years, and some followed people for up to two years after stopping.

The medications ranged from older ones like orlistat to newer ones like semaglutide and tirzepatide.

The researchers then compared these results with their earlier research on behavioral weight-management programs—programs focused on eating, activity, and habits. That review included 249 studies and more than 43,000 people.

What the study found

While taking medication, people lost significant weight: an average of 8.3 kg, or about 18 pounds, across all drugs, and 14.7 kg, or about 32 pounds, on semaglutide or tirzepatide.

Then, weight tended to come back.

Across all medications, people regained about 0.4 kg—roughly a pound—per month during the first year. Researchers projected a return to starting weight within about 1.7 years.

After semaglutide or tirzepatide, regain was about twice as fast: 0.8 kg, or roughly 1.8 pounds, per month. Starting weight was projected to return in about 1.5 years.

The health measures tracked—blood sugar, blood pressure, cholesterol, and triglycerides—were also predicted to return to their starting levels within about 1.4 years.

In other words, after medication stopped, both weight loss and improvements in these health measures tended to reverse.

Those timelines are predictions based on group averages. They don’t tell us exactly what will happen to you.

Here’s where the comparison gets interesting:

People regained weight more slowly after behavioral weight-loss programs, and the improvements in their health measures were estimated to last longer.

Those programs produced less initial weight loss—about 5.1 kg, or 11 pounds—but people maintained that loss better.

The original review also reports that improvements in health measures after behavioral programs lasted around five years, compared with about 1.4 years after medication.

These comparisons came from separate sets of studies. They weren’t a direct test of medication versus coaching in otherwise identical people. Research review: West and colleagues, BMJ, 2026

Practical takeaways

1. Prepare for regain before it happens

Regaining weight after stopping medication is common. It doesn’t mean you did something wrong.

The medication reduces appetite while you take it. Once you stop, that appetite can return.

Set expectations early, but leave room for individual differences. Some people maintain more of their weight loss than others.

The original article mentions early data suggesting that gradually reducing the dose may soften the rebound. That’s still preliminary, and this review doesn’t establish tapering as a proven way to prevent regain.

If you’re considering stopping or changing your dose, make a plan with your prescriber.

Discuss what to expect and how you’ll respond if hunger, weight, or blood sugar starts rising.

2. Use the time on medication to build sustainable habits

While the medication is curbing appetite, managing food intake is generally easier than it will be later.

However long you take a GLP-1, use that time to practice routines that support your health over time.

The original article highlights five areas:

Protein and muscle: It suggests 1.2–1.6 grams of protein per kilogram of body weight daily to help protect muscle. For people who lift, it also mentions 3–5 grams of creatine daily to support muscle growth and maintenance. These are general suggestions from the article, rather than findings from this review; an appropriate target depends on your needs and health.

Strength training: Work toward at least two full-body sessions a week. Strength training is a major tool for maintaining muscle while losing weight.

Movement: Aim for about 150 minutes a week of walking, cycling, swimming, or another activity you enjoy, adjusted to your abilities.

Sleep and stress: Both can shape appetite and food choices, so build them into the plan from the start.

Environment: Make helpful food choices easy to access at home and work. Build repeatable systems for shopping and preparing meals.

Track more than weight, too. Strength, energy, mood, and relevant blood tests can help you see the fuller picture of your health.

These habits are useful priorities. This review didn’t test them as a formula for preventing regain after medication.

3. Build skills that stay with you

Here’s the encouraging part: People who completed behavior-change programs kept weight off longer than people who stopped weight-loss medication. They regained weight more slowly, even when researchers accounted for how much they initially lost.

That’s where coaching programs like mine come in. We work on skills you can keep using: how you eat, how you move, how you handle challenging days, and how you set up your environment to make those behaviors easier.

The medication can help manage appetite. Coaching helps you use that time to build routines you can carry forward.

This review doesn’t prove that my program—or coaching alongside GLP-1s—prevents regain after stopping. But the slower regain after behavioral programs gives us an encouraging reason to invest in lasting behavior change.

That’s also why I’m continuing my education in this area. I’ve just joined the waitlist for the newest GLP-1 coaching certification in my field, and I’m excited to learn more about helping people build their lifestyle and behaviors around these tools—with a clear emphasis on what happens afterward, too.

Once I’m certified, I’ll add this support to my coaching offers. If you or anyone you know wants help using these tools while building habits and an environment that support long-term health, I’m your guy.

References

West S, Scragg J, Aveyard P, et al. Weight regain after cessation of medication for weight management: systematic review and meta-analysis. BMJ. 2026;392.

Hartmann-Boyce J, Theodoulou A, Oke JL, et al. Association between characteristics of behavioural weight loss programmes and weight change after programme end: systematic review and meta-analysis. BMJ. 2021;374.