Fresh analysis reveals that individuals who stop using blockbuster slimming jabs like Wegovy and Mounjaro may regain shed pounds far faster than those who end conventional lifestyle plans.
Findings released in a leading health publication demonstrates that while obese individuals often shed a large proportion of their total mass while on the medication, the weight returns at an estimated rate of 0.8 kg per month after stopping.
"People buying these medications need to be cognizant of the risk of rapid weight regain when the medication concludes," stated lead investigator Dr. Susan Jebb.
Such speed of recovery means a reversion to starting mass in about 18 months.
Comparing Treatments
The analysis, which looked at dozens of studies involving thousands of participants, compared the results of GLP-1 agonists with conventional dieting.
Researchers point out that individuals who lose weight through lifestyle changes alone generally experience a slower creep back—approximately 100 grams monthly—after stopping.
The Reason for the Rapid Regain
Nutrition scientists propose the mechanism of the injections accounts for the heightened rebound.
GLP-1 drugs imitate a natural hormone called glucagon-like peptide-1, which controls hunger.
"Long-term administration of GLP-1 concentrations several times higher than the body's typical production may cause the system to generate a reduced amount of its own natural hormone, and may also reduce sensitivity to its effects," said Dr. Adam Collins, a nutrition specialist.
"Withdrawal of this medication results in appetite is unsuppressed, making binge eating far more likely."
A Chronic Disease?
Medical guidelines suggest the jabs for people with obesity-related medical conditions, alongside prescribed lifestyle changes.
Professionals say that, due to the high risk of weight regain, the therapy might need to be ongoing.
This opinion is reinforced by pharmaceutical companies, who note that the results "underscore the long-term nature of excess weight," comparing it to managing conditions like high blood pressure.
Patient Testimonies
Individuals who have stopped the medication report a powerful resurgence of appetite.
"It was like something flipping and you're instantly extremely hungry," recalled a patient.
This challenge is compounded if patients have not developed lasting lifestyle or habit modifications during treatment.
Significant Interest
Survey data show that millions of people in the UK have tried these injections in the past year, with demand remaining high.
- Use is greater among women compared to males.
- The 40s and 50s age group shows the highest usage rates.
- Many obtain the medications through private prescriptions rather than the NHS.
Ultimately, experts stress that while the jabs are powerful agents for weight loss, they are not a permanent solution and lasting health benefits relies on combined lifestyle changes.
