Fresh analysis reveals that patients who stop using new weight-loss injections like Mounjaro or Wegovy can put back on lost weight much more quickly than those who stop conventional diet and exercise programs.
Research printed in a leading medical journal points out that while obese individuals can lose a large proportion of their total mass while using the jabs, the mass returns at an average rate of 0.8 kg per month once they quit.
"Individuals using such treatments must be informed of the danger of fast weight regain when the therapy ends," warns expert Dr. Susan Jebb.
Such speed of regain implies a return to original mass within about 18 months.
Weighing Therapies
The analysis, which reviewed dozens of trials involving thousands of participants, contrasted the effects of these new drugs with conventional dieting.
The team emphasize that people who shed pounds through lifestyle changes alone generally experience a more gradual weight regain—around 100 grams monthly—post-intervention.
The Reason for the Rapid Rebound
Doctors suggest the mode of action of the injections explains the accelerated rebound.
GLP-1 drugs mimic a body's own chemical called glucagon-like peptide-1, which helps regulate appetite.
"Long-term administration of the hormone concentrations several times higher than normal could lead to the system to generate a reduced amount of its endogenous hormone, and may also diminish sensitivity to its actions," noted Dr. Adam Collins, a dietetics expert.
"Discontinuation of this GLP-1 'fix' results in hunger is uncontrolled, making excessive eating far more likely."
A Chronic Condition?
Medical guidelines recommend the injections for individuals with weight-linked health risks, alongside recommended diet and exercise modifications.
A number of clinicians argue that, due to the likelihood of relapse, the treatment should be considered life-long.
This perspective is reinforced by drug manufacturers, who note that the results "emphasize the long-term character of obesity," comparing it to managing diseases like hypertension.
User Testimonies
People who have stopped the jabs report a intense return of cravings.
"It was like a switch flipping and I was suddenly starving," said one woman.
The struggle is exacerbated if users have not developed permanent lifestyle or habit changes during therapy.
Significant Interest
Recent estimates suggest that a significant number of adults in the UK have tried weight-loss jabs in the last 12 months, with desire remaining high.
- Adoption is greater among females than men.
- The 40s and 50s demographic shows the highest level of interest.
- Many obtain the medications through private prescriptions rather than the NHS.
Finally, researchers emphasize that while GLP-1 drugs are effective tools for weight loss, they are not a permanent fix and lasting health benefits relies on ongoing lifestyle support.
