The GLP-1 Exit Problem

If you start a GLP-1, what happens when you stop?

I've been thinking about this question a lot lately.

GLP-1 drugs such as semaglutide and tirzepatide have changed the way we think about weight loss. They can produce significant results, and for many people, they can be genuinely life-changing.

But there's another side of the story that doesn't get quite as much attention:

What happens when people stop taking them?

And more importantly, why are they stopping in the first place?

It's not always about motivation

Real-world studies suggest that many people discontinue GLP-1 treatment during the first year.

It's tempting to assume they simply decided they didn't want to continue.

But the reality is more complicated.

People stop because of cost. Insurance coverage changes. The medication becomes difficult to obtain. Some experience side effects. Others don't feel the treatment is working well enough. And some simply don't want to remain on medication indefinitely.

In one 2025 clinical-practice study of people taking semaglutide or tirzepatide for obesity, cost or insurance issues accounted for almost half of early discontinuations.

So when we talk about people "quitting" GLP-1s, we should be careful about framing it as a failure of discipline.

Sometimes, people aren't choosing to stop.

They simply can't continue.

Then there's the weight-regain question

This is where the evidence gets particularly interesting.

In the STEP 1 semaglutide trial, participants lost an average of around 17% of their body weight after 68 weeks.

After treatment was stopped, they regained a substantial amount of that weight over the following year, approximately two-thirds of the weight they had lost, on average.

Similar patterns have been observed with tirzepatide.

To me, this highlights something important.

These medications aren't simply giving people more willpower.

They are affecting biological systems involved in appetite, hunger and weight regulation.

When the medication is removed, those biological pressures don't necessarily disappear.

But here's what I find even more interesting

Not everyone responds the same way.

Some people regain a substantial amount of weight after stopping.

Some appear to maintain part of their weight loss.

And we still don't have a good way of predicting who will fall into which group.

That's a fascinating research question.

Could it depend on how long someone was on treatment?

How much weight they lost?

Their diet?

Their physical activity?

Their appetite?

Their metabolic health?

Or perhaps a combination of all of these?

We don't know yet.

And I think that's an important place for research to focus.

So, are GLP-1s forever?

I don't think that's the right question.

The better question is:

What does long-term success look like for each person?

For some, continued medication may be appropriate.

For others, circumstances may lead them to stop.

Either way, losing weight shouldn't be considered the finish line.

What happens after the weight comes off matters just as much.

And that's one reason I keep coming back to something we've been building at GlucoSpike.

Know before you eat

Whether you're taking a GLP-1, coming off one, or simply trying to improve your metabolic health, what you eat still matters.

At GlucoSpike, we're trying to make that decision easier.

Scan your meal before you eat it. Understand its potential glucose impact. Get practical suggestions before you take the first bite.

Because sometimes, the most useful intervention isn't what you do after the spike.

It's what you know before you eat.

Best,
Chai