Keeping Weight Off After Stopping Ozempic or Wegovy: What the Trials Show

Keeping weight off after stopping Ozempic, Wegovy or Mounjaro is hard, and the trials are clear about it: most people regain a large share of the weight within a year of stopping. In the STEP 1 extension, people regained about two-thirds of their lost weight in the year after semaglutide ended. That doesn’t make the effort pointless. It means the decision to stop belongs with your doctor, and the habits that protect you (strength training, protein-first eating, daily movement and regular weigh-ins) need to be running well before the last dose, not after.

What the trials show about stopping

Three large trials looked at what happens when the medication ends:

The researchers in STEP 1 concluded that the findings confirm obesity is a chronic condition and suggest ongoing treatment is needed to maintain the improvements. Canada’s obesity guideline also notes that medication can be used to maintain weight loss and prevent regain (Wharton et al., 2020). So staying on treatment is a legitimate option, not a failure. Whether to stay on, reduce or stop is your doctor’s call with you.

Why weight comes back

When the medication stops, appetite usually returns toward where it was. At the same time, your smaller body needs fewer calories than before, and after weight loss the body tends to defend its fat stores through a mix of metabolic, hormonal and behavioural responses (Rosenbaum and Leibel, 2010). The habits you ate by before the medication are still there, waiting.

That’s why the plan has to be built before you stop, not improvised after the hunger returns.

What helps: exercise makes a measurable difference

The best direct evidence comes from a trial of 195 adults who first lost about 13 kg on a low-calorie diet and then spent a year on exercise, liraglutide, both, or placebo (Lundgren et al., 2021). All active strategies kept off more weight than placebo. Exercise alone kept off about 4 kg more than placebo; the combination kept off the most and was the only one that also improved blood sugar control, insulin sensitivity and fitness.

Long-term data from people who kept weight off without medication point the same way. Members of the US National Weight Control Registry, who lost an average of 33 kg and kept it off for more than five years, reported about an hour of physical activity a day, regular self-weighing and a consistent eating pattern across weekdays and weekends (Wing and Phelan, 2005).

Your maintenance plan, before and after

While you’re still on the medication:

1. Lift two to three times a week to keep as much muscle as possible. Strength training on a GLP-1 has a starting plan.
2. Build a protein-first plate at every meal, with vegetables and a measured portion of starch.
3. Get to a daily walking habit you can keep for years.
4. Learn your portions by weighing food for a couple of weeks, so you know what maintenance looks like when appetite returns.

When you and your doctor agree on a change:

1. Weigh yourself daily and watch the 7-day average. Agree on a regain threshold, for example 2 to 3% of your weight, that triggers action. Daily ups and downs are normal; see why weight fluctuates day to day.
2. Keep weekends like weekdays. Consistency across the week was one of the habits successful maintainers reported.
3. Plan for hunger. Higher-protein, higher-fibre meals and planned snacks are easier than relying on willpower.
4. Book a follow-up with your doctor so you’re not managing regain alone.

Set a realistic definition of success

Keeping all of the weight off may not be realistic without ongoing treatment, and that’s not a personal failure. Holding a meaningful part of the loss, keeping your strength and keeping improved health markers are real wins. Your doctor can tell you which numbers matter most for you.

The bottom line

The trials show regain is the normal response to stopping a GLP-1 medication, so the decision belongs with your doctor and the plan has to start early. Strength training, daily movement, protein-first eating and regular weigh-ins give you the best odds. If you want a coach to run that routine with you month by month, alongside the care your doctor provides, Monthly 1:1 Coaching is ongoing with no end date, which suits maintenance better than a short program.