What happens when you stop taking a GLP-1?

If you are taking a GLP-1 medication such as Wegovy or Mounjaro and it is working well for you, stopping it may be the last thing on your mind.

Perhaps your appetite feels more manageable, food is taking up less space in your head and you are losing weight for the first time in years without feeling as though every meal requires enormous amounts of self-control.

For many people, that can feel like a huge relief, but there is a question that is starting to come up more often, particularly for people paying privately for these medications.

Image: Unsplash

What happens if, or when, you stop?

Maybe the cost becomes difficult to justify, perhaps you experience side effects, your circumstances change, you reach a weight you are happy with, or you simply do not want to stay on medication indefinitely.

Whatever the reason for stopping, it is helpful to understand that appetite, food noise and weight may begin to change again once the medication is no longer having the same effect.

That does not mean the treatment has failed, but it does mean the transition may need more support than simply reaching a target weight and carrying on as before.

Weight regain after stopping is common

We already have good evidence that weight regain can occur when GLP-1 medications are withdrawn.

In a large clinical trial called STEP 1, researchers looked at the effects of semaglutide 2.4 mg in adults with overweight or obesity. When participants were followed for a year after stopping the medication, they regained around two thirds of the weight they had previously lost, and several of the cardiometabolic improvements also moved back towards their starting levels.

The STEP 1 participants were given regular lifestyle support, including advice to reduce calorie intake and increase physical activity. However, the trial did not specifically focus on adequate protein intake or structured resistance training to preserve muscle, so it cannot tell us whether a more comprehensive nutrition and strength-based approach during treatment might influence what happens after the medication is stopped.

More recent research has strengthened that picture. A 2026 systematic review looked at 48 studies examining what happened to weight after GLP-1 medications were stopped. In the six larger randomised trials used to model the pattern of weight regain, participants had regained around 60 per cent of the weight they had lost one year after stopping treatment.

There is an important limitation here though. These studies were not designed to answer whether people who receive more comprehensive nutritional support, eat adequate protein and undertake structured resistance training might have a different experience after stopping. So, while the research tells us that weight regain is common, it does not tell us that the same degree of regain is inevitable for everyone.

That does not mean every person will regain the same amount of weight, and it certainly does not mean taking the medication was pointless.

What it tells us though, is that the processes regulating appetite and body weight do not simply reset because someone has spent a year or two eating less. For many people, some of the biology that made weight management difficult in the first place is still there.

What might happen to my appetite when I stop a GLP-1?

If your appetite was significantly reduced while taking a GLP-1 medication, it may begin to increase again when the medication is stopped.

GLP-1 medications act on biological pathways involved in hunger, fullness and food reward, so when that influence is removed, appetite can begin to change. For some people, hunger increases, portions may naturally become larger, cravings may become more noticeable and the food noise that had become so quiet may begin to return.

That can feel incredibly unsettling, particularly if eating has felt easier while you have been taking the medication and weight loss has been one of your main goals.

It is important to understand that these changes are not simply behavioural: appetite is influenced by biology, and when the medication is stopped that biology may begin to make itself felt again.

But, as we explored in the first blog in this series, 'The Food Noise Has Gone', biology is rarely the whole story either.

What comes back when the appetite comes back?

Imagine that before starting a GLP-1 medication you regularly ate in response to stress. Whilst on the medication, your appetite dropped considerably, and that behaviour largely disappeared. It would therefore be very easy to conclude that emotional eating had been solved.

But what happens if you stop the medication, appetite returns, and life is still just as stressful? Or perhaps your food noise was partly driven by years of restrictive dieting? While taking the medication, eating less suddenly felt effortless, but the beliefs underneath it were never really challenged.

You may still believe carbohydrates are bad, that hunger is something to ignore, or that gaining a few pounds means you have failed. Perhaps you were skipping meals because you were busy, sleeping badly because of perimenopause, relying on food for comfort at the end of the day, or living with a difficult relationship with your body that started when you were a teenager.

A GLP-1 medication may change how strongly you experience hunger and food reward, but it does not automatically resolve everything surrounding them.

That is why I think the period while someone is taking the medication can be incredibly valuable. Not because you need to spend the whole time preparing anxiously for the day you stop, but because there may be an opportunity to understand your health while things feel a little quieter.

What if I stay on a GLP-1 for longer?

For some people, GLP-1 medications may be used for the longer term under the guidance of their prescribing doctor, while others may decide or need to stop at some point.

What matters is that the medication is not treated as the whole health plan. Whether you are taking it for months or years, there is still huge value in looking at nutrition, muscle, sleep, digestion, metabolic health and your relationship with food alongside it. And if you do eventually stop, having that wider support in place may make the transition feel less daunting.

What should support alongside a GLP-1 actually look like?

It should be much broader than simply telling somebody to eat less and exercise more.

If appetite is dramatically reduced, we need to think about whether you are still meeting your nutritional needs.

• Are you eating enough protein?

• Are you building or maintaining muscle?

• Are you eating enough overall to support energy, hormones and bone health?

• How is your digestion?

• Are you getting enough fibre and fluid?

• What is happening with your sleep?

• Are you relying on the absence of hunger rather than learning what a balanced pattern of eating actually looks like for you?

• And what has happened to your relationship with food?

  
  

For someone with a history of dieting or disordered eating, this last question matters enormously.

If the medication has made restriction feel easier, it can be tempting to think everything is going brilliantly because the scales are moving in the desired direction, but weight loss on its own does not tell us whether somebody is well nourished, physically strong, sleeping well, mentally well or developing a healthier relationship with food.

The British Dietetic Association now specifically highlights protein intake, preserving muscle mass, micronutrient intake and longer-term lifestyle changes as important considerations for people using weight management medication. These are not optional extras, but they are part of looking after your health while the medication is doing its job.

And what about your mental health?

For some women, quieter food noise can be transformative. They may feel less preoccupied with food, less guilty about eating and more comfortable in their body, and that can have a very positive effect on wellbeing, but if food has historically played a role in emotional regulation, stress management, comfort or reward, it is still worth understanding that relationship.

If it has been difficult to tolerate uncomfortable emotions without eating, what happens when the medication is no longer suppressing appetite as strongly?

If years of body dissatisfaction drove repeated diets, has that relationship with your body actually changed? It may feel as though it has when you have lost weight, but how might you feel if some of that weight begins to return after stopping the medication?

If weight gain during perimenopause made you feel as though your body had betrayed you, has losing weight resolved that feeling, or has it simply made it quieter for a while?

If you stop and regain some weight, you have not failed

Weight regain after stopping a GLP-1 medication is not evidence that you have failed to maintain your results.

The clinical research tells us that regain is common. As mentioned previously, a 2026 systematic review found a consistent pattern of weight rebound after GLP-1 medications were discontinued, and NICE now specifically recommends giving people support after treatment stops.

That should therefore also change how we talk about this. So instead of asking, “Why couldn't I keep the weight off?”, perhaps the more useful question is: “What support, physiologically and emotionally, does my body need now that the medication is no longer having the same effect?”

That shift matters because shame is rarely a useful foundation for looking after your health.

The bigger picture

Whether you stay on a GLP-1 medication for months or years, or eventually stop, the goal has to be bigger than simply weighing less.

It is about understanding what your body needs physiologically and emotionally, protecting your muscle and metabolic health, supporting sleep and digestion, and building a relationship with food that does not depend entirely on the medication being there.

For many women, that also means unpicking some of the ‘food stories’ they have carried for years, the beliefs, experiences and emotions that have shaped how they feel about food, weight and their body.

The medication may be part of your health plan, but I don’t think it should be the only plan.

For most of us, our relationship with food and our bodies is far more nuanced than that.