New research indicates that individuals who discontinue new GLP-1 drugs like semaglutide or tirzepatide tend to recover shed pounds much more quickly than those who end traditional diet and exercise plans.
Published data in a major health publication demonstrates that while obese individuals often shed substantial amounts of their total mass while undergoing treatment, the mass returns at an average rate of 0.8 kg per month upon discontinuation.
"Users purchasing these medications need to be informed of the potential of quick rebound weight gain when the therapy ends," cautioned expert Dr. Susan Jebb.
This pace of regain means a reversion to original mass in about 18 months.
Comparing Therapies
The analysis, which looked at dozens of studies involving over 9,000 of participants, contrasted the effects of the injectable medications with conventional dieting.
Researchers point out that people who lose weight through dieting usually have a less rapid weight regain—perhaps 100 grams monthly—after stopping.
Explaining the Fast Regain
Doctors believe the way of the jabs is key to understanding the amplified rebound.
GLP-1 drugs copy a natural hormone called glucagon-like peptide-1, which moderates hunger.
"Long-term administration of the hormone levels far above than the body's typical production may cause the body to generate a reduced amount of its own natural GLP-1, and could lessen sensitivity to its effects," explained Dr. Adam Collins, a dietetics expert.
"Discontinuation of this medication leads to hunger is no longer kept in check, making excessive eating far more likely."
A Lifelong Issue?
The NHS suggest the injections for people with obesity-related medical conditions, alongside recommended lifestyle changes.
Professionals argue that, due to the significant potential of weight regain, the treatment should be considered life-long.
This view is echoed by pharmaceutical companies, who say that the findings "underscore the long-term character of excess weight," similar to managing diseases like high blood pressure.
User Testimonies
Individuals who have discontinued the jabs explain a sudden return of cravings.
"It felt as if a switch that goes on and I was suddenly starving," described one woman.
The struggle is compounded if individuals have not developed lasting lifestyle or habit modifications during therapy.
Widespread Adoption
Figures suggest that millions of adults in the UK have tried weight-loss jabs in the last 12 months, with interest remaining high.
- Use is higher among women compared to men.
- The 40s and 50s age group shows the greatest usage rates.
- Many obtain the medications through private healthcare rather than the NHS.
Ultimately, researchers emphasize that while the jabs are potent tools for shedding pounds, they are not a permanent fix and lasting health benefits likely depends on ongoing behavioural support.
