A recent study indicates that people who stop using blockbuster GLP-1 drugs like semaglutide or tirzepatide may regain shed pounds far faster than those who halt traditional lifestyle plans.
Published data in a major health publication shows that while overweight individuals can lose about a fifth of their total mass while using the jabs, the weight comes back at an average rate of 0.8 kg per month once they quit.
"People buying these medications must be aware of the risk of fast rebound weight gain when the therapy ends," warns lead investigator Dr. Susan Jebb.
This pace of regain means a return to starting weight within about a year and a half.
Comparing Approaches
The research, which examined 37 of studies involving over 9,000 of participants, contrasted the results of GLP-1 agonists with other pills.
Researchers note that people who shed pounds through diet and exercise usually experience a more gradual weight regain—approximately 100 grams monthly—once they finish.
Explaining the Quick Rebound
Nutrition scientists believe the mechanism of the injections accounts for the accelerated weight return.
These medications copy a natural hormone called glucagon-like peptide-1, which moderates feelings of fullness.
"Sustained high doses of GLP-1 levels several times higher than normal might result in the system to generate a reduced amount of its own natural GLP-1, and may also diminish sensitivity to its actions," said Dr. Adam Collins, a nutrition specialist.
"Stopping of this GLP-1 'fix' leads to appetite is unsuppressed, making excessive eating far more likely."
A Lifelong Condition?
The NHS recommend the jabs for individuals with obesity-related health risks, alongside prescribed lifestyle changes.
Many experts contend that, considering the significant potential of relapse, the therapy is often life-long.
This view is echoed by pharmaceutical companies, who state that the findings "underscore the chronic character of excess weight," akin to managing diseases like high blood pressure.
Patient Testimonies
People who have come off the jabs describe a powerful resurgence of appetite.
"It felt as if a switch activating and I was suddenly starving," described one woman.
This difficulty is compounded if users have not adopted permanent lifestyle or habit modifications during treatment.
Growing Use
Recent estimates indicate that a significant number of people in the UK have tried these injections in the past year, with desire being substantial.
- Use is greater among women than men.
- The middle-aged demographic shows the greatest level of interest.
- Many access the medications through private prescriptions rather than public health services.
Ultimately, experts stress that while the jabs are potent agents for weight loss, they are not a magic solution and long-term success hinges on combined behavioural support.
