A recent study reveals that people who discontinue popular GLP-1 drugs like semaglutide or tirzepatide can put back on reduced body mass far faster than those who halt conventional diet and exercise plans.
Findings released in a major medical journal points out that while overweight individuals often shed a large proportion of their total mass while on the medication, the weight comes back at an average rate of 0.8 kg per month after stopping.
"People using these drugs need to be aware of the risk of rapid rebound weight gain when the medication is stopped," warns expert Dr. Susan Jebb.
This pace of regain suggests a return to pre-treatment mass within about a year and a half.
Comparing Approaches
The analysis, which examined dozens of studies involving over 9,000 of participants, contrasted the results of these new drugs with conventional dieting.
Researchers emphasize that individuals who shed pounds through lifestyle changes alone generally have a slower weight regain—around 0.1 kg a month—post-intervention.
Understanding the Fast Regain
Nutrition scientists believe the mode of action of the injections is key to understanding the heightened rebound.
These medications copy a body's own chemical called glucagon-like peptide-1, which helps regulate feelings of fullness.
"Long-term administration of GLP-1 levels far above than the body's typical production may cause the system to produce less of its own natural hormone, and could reduce sensitivity to its actions," said Dr. Adam Collins, a nutrition expert.
"Withdrawal of this medication results in appetite is uncontrolled, making excessive eating a significant risk."
A Lifelong Issue?
The NHS suggest the jabs for people with weight-linked health risks, accompanied by prescribed lifestyle changes.
A number of clinicians say that, due to the significant potential of relapse, the therapy is often long-term.
This perspective is reinforced by pharmaceutical companies, who state that the findings "highlight the chronic character of obesity," comparing it to managing conditions like high blood pressure.
User Experiences
Users who have stopped the medication report a sudden return of hunger.
"It felt as if a switch that goes on and you're instantly extremely hungry," described a patient.
The struggle is exacerbated if users have not adopted sustainable dietary or behavioural modifications during treatment.
Significant Interest
Recent estimates suggest that a significant number of people in the UK have tried weight-loss jabs in the past year, with demand remaining high.
- Adoption is greater among females compared to men.
- The middle-aged age group shows the highest usage rates.
- A large proportion access the medications through private healthcare rather than public health services.
Finally, experts emphasize that while these medications are powerful agents for shedding pounds, they are not a permanent fix and lasting health benefits hinges on ongoing lifestyle support.
