Fresh analysis suggests that people who stop using blockbuster GLP-1 drugs like semaglutide or tirzepatide can put back on reduced body mass much more quickly than those who end traditional lifestyle programs.
Published data in a major health publication demonstrates that while overweight people often shed about a fifth of their body weight while on the medication, the mass returns at an estimated rate of 0.8 kg per month after stopping.
"Users using these treatments need to be informed of the danger of quick rebound weight gain when the therapy ends," stated researcher Dr. Susan Jebb.
That rate of recovery suggests a reversion to pre-treatment mass within about a year and a half.
Analyzing Approaches
The research, which looked at dozens of studies involving thousands of participants, contrasted the results of these new drugs with other pills.
Researchers note that individuals who lose weight through diet and exercise usually see a more gradual creep back—around 0.1 kg a month—post-intervention.
Understanding the Fast Rebound
Nutrition scientists suggest the way of the injections accounts for the accelerated rebound.
GLP-1 drugs imitate a natural hormone called GLP-1, which controls hunger.
"Artificially providing the hormone levels far above than normal may cause the body to produce less of its endogenous hormone, and could diminish sensitivity to its actions," noted Dr. Adam Collins, a nutrition expert.
"Withdrawal of this medication results in hunger is uncontrolled, making overeating far more likely."
A Lifelong Issue?
Medical guidelines advise the jabs for individuals with obesity-related medical conditions, alongside recommended lifestyle changes.
A number of clinicians argue that, considering the likelihood of relapse, the treatment should be considered life-long.
This view is reinforced by drug manufacturers, who state that the results "highlight the persistent nature of excess weight," similar to managing conditions like high blood pressure.
Patient Experiences
People who have discontinued the medication describe a sudden resurgence of cravings.
"It was like a trigger flipping and I was suddenly extremely hungry," recalled one woman.
This challenge is exacerbated if patients have not adopted sustainable lifestyle or habit changes during treatment.
Growing Interest
Figures suggest that millions of people in the UK have tried these injections in the last 12 months, with demand continuing to grow.
- Use is higher among women than males.
- The 40s and 50s age group shows the highest usage rates.
- A large proportion access the medications through private prescriptions rather than the NHS.
In conclusion, experts emphasize that while GLP-1 drugs are effective agents for shedding pounds, they are not a magic solution and maintained weight loss likely depends on combined behavioural management.
