New research reveals that individuals who discontinue new weight-loss injections like Mounjaro or Wegovy tend to recover shed pounds far faster than those who stop traditional lifestyle programs.
Research printed in a leading health publication demonstrates that while obese individuals frequently drop a large proportion of their total mass while on the medication, the mass is regained at an estimated rate of nearly a kilo each month upon discontinuation.
"People using these medications must be cognizant of the risk of fast rebound weight gain when the medication is stopped," cautioned researcher Dr. Susan Jebb.
That rate of recovery implies a return to starting weight in about one and a half years.
Comparing Treatments
The study, which reviewed dozens of trials involving thousands of participants, contrasted the effects of these new drugs with other pills.
Researchers note that people who shed pounds through lifestyle changes alone typically experience a less rapid weight regain—perhaps 0.1 kg a month—once they finish.
The Reason for the Quick Rebound
Experts believe the mode of action of the jabs is key to understanding the heightened rebound.
The injections imitate a natural hormone called glucagon-like peptide-1, which helps regulate feelings of fullness.
"Long-term administration of the hormone concentrations far above than normal could lead to the body to produce less of its endogenous GLP-1, and may also lessen responsiveness to its actions," noted Dr. Adam Collins, a nutrition specialist.
"Withdrawal of this hormone supplement results in appetite is no longer kept in check, making binge eating a significant risk."
A Lifelong Disease?
The NHS suggest the jabs for individuals with obesity-related health risks, accompanied by recommended diet and exercise modifications.
A number of clinicians say that, due to the high risk of weight regain, the treatment is often ongoing.
This perspective is echoed by drug manufacturers, who note that the findings "emphasize the long-term nature of obesity," akin to managing conditions like high blood pressure.
Patient Experiences
Users who have stopped the medication describe a sudden resurgence of appetite.
"It felt as if something activating and I was suddenly starving," described a patient.
This difficulty is compounded if patients have not established sustainable lifestyle or habit changes during therapy.
Growing Adoption
Figures show that millions of adults in the UK have used these injections in the last 12 months, with desire remaining high.
- Use is higher among women than males.
- The 40s and 50s age group shows the greatest level of interest.
- A large proportion access the drugs through private prescriptions rather than public health services.
Finally, experts caution that while the jabs are effective agents for weight loss, they are not a magic cure and long-term success likely depends on integrated behavioural changes.
