After Stopping Mounjaro or Wegovy: How to Keep the Weight Off

What happens when you stop Mounjaro or Wegovy?

When people stop Mounjaro (tirzepatide) or Wegovy (semaglutide), most of them regain a large share of the weight they lost, usually within a year. Two trials measured this by stopping the drug on purpose.

In the STEP 1 trial extension (Wilding et al., 2022, Diabetes, Obesity and Metabolism), the 228 adults on semaglutide 2.4 mg (of 327 followed up) had lost an average of 17.3% of their body weight over 68 weeks. At week 68 the drug and the lifestyle program were both stopped. By week 120, a year later, they had regained 11.6 percentage points, leaving them a net 5.6% below where they started. The authors summed it up as regaining two-thirds of their prior weight loss. For most measures, the cardiometabolic improvements seen on the drug also reverted towards baseline.

SURMOUNT-4 (Aronne et al., 2024, JAMA) gave 783 adults tirzepatide for 36 weeks; the 670 who completed that phase had lost a mean 20.9%. Half of them then switched to placebo without being told. Over the next 52 weeks the placebo group regained 14.0% of body weight, while those who stayed on tirzepatide lost a further 5.5%. Only 16.6% of the placebo group kept at least 80% of their earlier loss, against 89.5% of those still on the drug. The authors wrote that withdrawing tirzepatide led to substantial regain of lost weight.

That warning is current. A PTI report from 7 April 2026 said the Central Drugs Standard Control Organisation (CDSCO) had intensified surveillance of unauthorised sale and promotion of GLP-1 drugs, and that in India they can be prescribed only by endocrinologists, internal medicine specialists and cardiologists. One endocrinologist quoted in that report warned that short-term use without lasting lifestyle changes may lead to rebound weight gain after people stop. This guide covers exercise and food only; see our medical disclaimer.

Why does weight come back after stopping weight-loss injections?

Weight comes back mainly because appetite comes back, and the body defends its old weight by pushing you to eat more than before. While you are on the drug, it holds that push down. The 2025 joint advisory on nutrition for GLP-1 therapy (Mozaffarian et al., from four US obesity and nutrition societies) says these drugs reduce energy intake by 16–39% compared with placebo, through changes in cravings, hunger and fullness.

The pull is strong. A 2016 analysis by Polidori and colleagues, including Kevin Hall of the US National Institutes of Health, estimated that weight loss raises appetite by about 100 kcal a day for every kilogram lost, more than three times the slowdown in calories burned. That study looked at a different drug (canagliflozin), not GLP-1 medicines. On its estimate, someone who has lost 10 kg would feel driven to eat roughly 1,000 kcal a day more than before they started; that is our arithmetic, not a measured figure for GLP-1 users.

A lighter body also needs less food, so going back to your old portions means regaining. Work out your new maintenance number with the TDEE calculator rather than guessing. Muscle matters too. The same joint advisory cites modelling that, without structured strength training, muscle can make up 10–15% of the weight lost in women and 20–25% in men. Keeping muscle is one reason the exercise guide for weight-loss injections puts strength training first.

Outside trials, the joint advisory reports, only about 33–50% of people are still taking these drugs after a year, and in STEP 1 and SURMOUNT-4, which offered dietitian counselling during treatment, most people regained weight once the drug and that support stopped. So plan for the months after the last dose before they arrive.

Does exercise stop weight regain after GLP-1 injections?

The best trial so far suggests regular, structured exercise helps people hold on to lost weight after a GLP-1 drug is stopped, but it was small and used a different GLP-1 drug. In a Copenhagen trial (Lundgren et al., 2021, New England Journal of Medicine), 195 adults with obesity first lost an average of 13.1 kg on an 8-week low-calorie diet. They were then randomly assigned for a year to exercise, the GLP-1 drug liraglutide 3.0 mg, both, or placebo.

At the end of that year, every active group had lost more weight than placebo since randomisation: 4.1 kg more with exercise, 6.8 kg with liraglutide and 9.5 kg with both. The combination roughly doubled the drop in body-fat percentage (3.9 points) compared with either alone, and was the only group with improvements in glycated haemoglobin (a blood-sugar measure), insulin sensitivity and fitness. The exercise program started with six weeks of gradual build-up, then two supervised group sessions a week (hard indoor cycling followed by circuit training) plus two sessions on their own.

The follow-up (Jensen et al., 2024, eClinicalMedicine) checked 109 of them a year after all treatment ended. In that year, people who had been on liraglutide alone regained 9.6 kg, 6.0 kg more than the exercise-only group (3.6 kg); the exercise-plus-liraglutide group regained 7.1 kg. The authors wrote that body weight and body composition were maintained one year after the exercise program ended, in contrast to regain after stopping the drug alone. The exercise-only group also reported being more active a year later: a median of 240 minutes of moderate-to-vigorous activity a week, against 30 minutes for the liraglutide-only group.

Mind the limits. Liraglutide is a daily GLP-1 injection, not semaglutide or tirzepatide, the first loss came from a diet, and the follow-up was small. No trial we found has tested an exercise program after stopping Mounjaro or Wegovy specifically. The evidence suggests exercise built as a habit while on the drug is more likely to carry over than starting on the day you stop.

How do you maintain weight loss after stopping injections?

To maintain weight loss after injections, the habits with the most evidence are a lot of physical activity, regular strength training, a consistent eating pattern and frequent self-weighing. None is a guarantee, and most of the evidence comes from people who lost weight without drugs.

In a 2005 review of the US National Weight Control Registry (American Journal of Clinical Nutrition), Wing and Phelan reported that members had lost an average of 33 kg and kept it off for more than five years, with about an hour a day of physical activity, regular breakfast, self-monitoring of weight and the same eating pattern on weekdays and weekends. The same review found that once people had maintained their loss for 2–5 years, their chance of longer-term success greatly increased. This is self-reported data from successful people, so it shows what they do, not proof that each habit caused the result.

Self-weighing has trial evidence. In the STOP Regain trial (Wing et al., 2006, NEJM), 314 people who had lost a mean of 19.3 kg were given a maintenance program built on daily weighing (face to face or online), or newsletters only. Over 18 months, 72.4% of the newsletter group regained 2.3 kg or more, against 45.7% of those taught face to face. Daily weighing was linked with a lower risk of regaining.

For exercise volume, the joint advisory recommends that GLP-1 drugs be prescribed with strength training at least three times a week plus at least 150 minutes of moderate aerobic exercise a week, to preserve muscle and bone. Keep that going after the drug stops; registry members did more. Walking adds minutes easily: see walking for weight loss. For protein, the advisory notes that 1.2–1.6 g per kg a day has been proposed during active weight loss and lists nutrition for maintenance after stopping as an area that still needs study. Our protein guide for weight-loss injections and the protein intake calculator cover the food side in Indian meals.

What should the first 6 months after stopping Mounjaro or Wegovy look like?

This plan is for adults whose doctor has decided, with them, when the medicine stops. It starts before the last dose, because habits built while appetite is low are more likely to last.

1. 1

   Weeks before the last dose: build the routine

   Get to three strength sessions a week (squat or sit-to-stand, a push, a pull, a hinge such as a hip bridge or Romanian deadlift, and a carry), plus daily walking. Learn your new maintenance calories with the TDEE calculator and practise eating that amount now.

2. 2

   Month 1: weigh daily and set a band

   Weigh every morning after the toilet and before food, and look at the weekly average, not single days. Agree a regain limit with your coach or doctor, such as 2 kg above your lowest weekly average, and what you will do if you cross it.

3. 3

   Month 1–2: expect hunger and plan meals around it

   Appetite is likely to rise. Fix meal times, put a protein food (dal, paneer, curd, eggs, chicken, fish, soya) at every meal, fill half the plate with vegetables and keep snacks out of the house. Eat the same way on weekdays and weekends.

4. 4

   Month 2–3: raise activity, keep lifting

   Work up towards 150 minutes or more of moderate activity a week, then beyond if you can. Keep strength sessions at three a week and add load or reps slowly, so you are getting stronger while your weight holds.

5. 5

   Month 4–5: check the numbers and adjust

   If your weekly average has crept up, check portions, weekends and steps first. If it has held, change nothing. Take your weight log to your doctor's follow-up.

6. 6

   Month 6: make it the default

   Keep weighing and lifting, and plan ahead for travel, festivals and illness rather than starting again afterwards.

What should you ask your doctor about coming off GLP-1 medicines?

Coming off GLP-1 medicines is a medical decision, and how and when belongs to your doctor; the NHS says your doctor may suggest reducing the dose gradually. Go with questions, not a decided plan.

• Should I stop at all, or is longer treatment better for me? What happens to my blood pressure, blood sugar and cholesterol if I stop?
• If I stop, how should it be done, and over what timeframe?
• Which tests should I have after stopping, and when?
• How much weight regain should make me come back to you?
• Is there anything in my health history that limits the exercise I can do?
• Should I see a registered dietitian for my meals during and after stopping?

The PTI report quoted the All India Organisation of Chemists and Druggists saying these medicines must never be dispensed without a valid prescription from a registered medical practitioner.

Where a coach fits after weight-loss injections

MakeMyFitness offers live one-to-one coaching on video across India, at ₹799 a session at your gym or ₹899 at home, and it suits people coming off weight-loss injections who want a coach to keep their strength training and weekly check-ins going while their doctor manages the medicine. Our coaches, led by Kumar Abhishek, are fitness coaches, not doctors, dietitians or physiotherapists. We do not advise on medicines or doses. Our Rehab & Recovery program is exercise coaching after a clinician has cleared you, not treatment.

A coach helps where the evidence points: building a regular exercise routine, with strength training at its centre, before the drug stops, and keeping it going when appetite returns. Choose personal gym training or personal home training, see our strength training goal, or book a first session.