"I heard that once you stop Mounjaro, all the weight comes back. What's the point then?" This is the biggest concern many people have before starting GLP-1 weight loss medications. This article honestly answers this question and tells you how to minimize the rebound after stopping.
This is a scientific fact and there's no need to sugarcoat it. The STEP 1 extension study tracking patients who stopped Wegovy found:
The reason: Once the GLP-1 medication stops working, appetite gradually returns to pre-medication levels, and the body's metabolic mechanisms try to pull weight back to its original, higher "set point"—hunger increases and weight naturally rises.
Modern medicine has defined obesity as a chronic disease, just like high blood pressure or diabetes, requiring long-term management rather than a one-time cure. The mechanism of GLP-1 weight loss medications changes the brain's perception of fullness—once stopped, this change disappears.
This is not a flaw in the medication, but the nature of our physiological mechanisms. Just like how blood pressure rises when a patient stops taking blood pressure medication.
Use the time when your appetite is suppressed as a golden period to build new lifestyle habits. Exercise regularly, adjust your diet structure, and learn to recognize true hunger. These habits will protect you once the medication stops.
Maintaining or increasing muscle mass during weight loss is the most critical factor for maintaining metabolic rate after stopping. Aim for strength training at least 2–3 times a week, and continue this even after stopping the medication.
Discuss with your doctor whether you can slowly reduce the dose (e.g., from 15mg to 10mg, then to 5mg) to give your body time to adapt. This is much gentler and results in a less severe rebound than stopping cold turkey.
Decide on an "alert weight" (e.g., 3–5 kg above your lowest point). Once you cross this line, take immediate action: tighten your diet, increase exercise, or discuss resuming medication with your doctor.
Weigh yourself once a week after stopping, and log it in Slimly's weight trend chart. Spotting a rebound trend early and intervening is much easier than dealing with it after all the weight has returned.
For patients needing long-term weight control, doctors might recommend a "maintenance dose" plan—using the lowest effective dose to maintain weight. Many find that a low-dose injection once a week is enough to maintain their results.
There is no standard answer to this question; it depends on individual goals and conditions. However, here are some reference points:
Continue to use Slimly to track weight trends, set an alert line, and act early if you spot a rebound.
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