Fresh analysis reveals that people who discontinue popular slimming jabs like Mounjaro or Wegovy may regain reduced body mass much more quickly than those who halt traditional lifestyle programs.
Published data in a major health publication shows that while obese individuals frequently drop substantial amounts of their total mass while on the medication, the weight is regained at an average rate of 0.8 kg per month once they quit.
"Individuals purchasing these treatments need to be aware of the potential of rapid rebound weight gain when the treatment ends," stated lead investigator Dr. Susan Jebb.
This pace of regain means a reversion to pre-treatment mass within about a year and a half.
Comparing Therapies
The research, which looked at dozens of trials involving over 9,000 of participants, compared the results of GLP-1 agonists with older methods.
Scientists note that people who lose weight through lifestyle changes alone generally experience a less rapid weight regain—around 100 grams monthly—post-intervention.
Understanding the Rapid Rebound
Nutrition scientists propose the mechanism of the injections explains the heightened rebound.
These medications copy a body's own chemical called glucagon-like peptide-1, which controls feelings of fullness.
"Sustained high doses of GLP-1 levels far above than the body's typical production may cause the system to produce less of its endogenous hormone, and may also reduce sensitivity to its actions," explained Dr. Adam Collins, a dietetics specialist.
"Discontinuation of this GLP-1 'fix' results in appetite is unsuppressed, making excessive eating far more likely."
A Chronic Disease?
Medical guidelines advise the jabs for people with weight-linked medical conditions, alongside recommended diet and exercise modifications.
Professionals argue that, considering the high risk of relapse, the treatment might need to be ongoing.
This opinion is supported by drug manufacturers, who note that the results "underscore the chronic nature of excess weight," akin to managing diseases like high blood pressure.
User Accounts
People who have stopped the medication report a intense return of appetite.
"It was like a switch that goes on and I was suddenly starving," described a patient.
This difficulty is compounded if individuals have not adopted lasting lifestyle or habit modifications during therapy.
Growing Use
Recent estimates show that a significant number of adults in the UK have used weight-loss jabs in the past year, with desire continuing to grow.
- Adoption is more common among females compared to males.
- The 40s and 50s demographic shows the greatest usage rates.
- Many obtain the drugs through private prescriptions rather than the NHS.
Finally, experts caution that while GLP-1 drugs are potent tools for shedding pounds, they are not a permanent solution and maintained weight loss hinges on combined behavioural support.
