A recent study indicates that people who stop using blockbuster weight-loss injections like Mounjaro or Wegovy can put back on lost weight at a significantly accelerated pace than those who halt conventional lifestyle plans.
Research printed in a major medical journal demonstrates that while obese people often shed a large proportion of their total mass while using the jabs, the weight comes back at an estimated rate of 0.8 kg per month once they quit.
"Individuals using these medications should be cognizant of the danger of quick rebound weight gain when the therapy is stopped," warns researcher Dr. Susan Jebb.
This pace of recovery implies a return to pre-treatment mass within about 18 months.
Weighing Treatments
The analysis, which looked at dozens of trials involving thousands of patients, compared the results of these new drugs with other pills.
The team emphasize that people who lose weight through diet and exercise usually have a less rapid weight regain—perhaps 0.1 kg a month—post-intervention.
Explaining the Quick Regain
Doctors propose the mode of action of the injections explains the accelerated regain.
These medications mimic a body's own chemical called glucagon-like peptide-1, which moderates feelings of fullness.
"Sustained high doses of the hormone concentrations far above than the body's typical production could lead to the system to generate a reduced amount of its own natural GLP-1, and could lessen responsiveness to its effects," noted Dr. Adam Collins, a dietetics researcher.
"Stopping of this medication leads to appetite is uncontrolled, making overeating a significant risk."
A Chronic Issue?
The NHS recommend the jabs for individuals with obesity-related medical conditions, accompanied by recommended diet and exercise modifications.
Professionals contend that, due to the high risk of weight regain, the treatment should be considered ongoing.
This view is reinforced by drug manufacturers, who state that the results "highlight the chronic nature of obesity," comparing it to managing conditions like diabetes.
Patient Testimonies
Users who have stopped the jabs describe a sudden resurgence of hunger.
"I experienced a trigger activating and you're instantly starving," described one woman.
This challenge is compounded if patients have not adopted sustainable lifestyle or habit changes during treatment.
Significant Use
Recent estimates suggest that a significant number of people in the UK have tried weight-loss jabs in the past year, with demand continuing to grow.
- Adoption is more common among females than males.
- The middle-aged demographic shows the highest usage rates.
- A large proportion obtain the medications through private healthcare rather than the NHS.
In conclusion, clinicians emphasize that while these medications are powerful tools for weight loss, they are not a standalone solution and long-term success likely depends on combined lifestyle support.
