New research reveals that patients who discontinue blockbuster slimming jabs like Wegovy and Mounjaro tend to recover reduced body mass much more quickly than those who halt conventional diet and exercise programs.
Findings released in a leading medical journal points out that while obese individuals frequently drop about a fifth of their total mass while undergoing treatment, the mass comes back at an average rate of nearly a kilo each month upon discontinuation.
"Individuals purchasing these treatments need to be cognizant of the danger of rapid rebound weight gain when the therapy ends," warns researcher Dr. Susan Jebb.
That rate of recovery suggests a reversion to starting weight within about 18 months.
Analyzing Treatments
The analysis, which looked at 37 of trials involving over 9,000 of patients, compared the results of the injectable medications with other pills.
The team note that individuals who shed pounds through lifestyle changes alone typically experience a less rapid creep back—around 0.1 kg a month—post-intervention.
The Reason for the Quick Rebound
Nutrition scientists propose the mechanism of the jabs explains the amplified rebound.
The injections imitate a body's own chemical called GLP-1, which moderates feelings of fullness.
"Artificially providing GLP-1 concentrations several times higher than the body's typical production could lead to the system to generate a reduced amount of its endogenous hormone, and could reduce sensitivity to its actions," explained Dr. Adam Collins, a dietetics researcher.
"Stopping of this medication leads to hunger is uncontrolled, making overeating a significant risk."
An Ongoing Condition?
Medical guidelines recommend the injections for people with obesity-related health risks, alongside prescribed diet and exercise modifications.
Many experts say that, given the high risk of relapse, the therapy might need to be life-long.
This view is supported by pharmaceutical companies, who note that the findings "underscore the chronic nature of obesity," comparing it to managing diseases like high blood pressure.
Patient Experiences
Users who have come off the medication report a powerful return of appetite.
"It was like a switch flipping and I was suddenly extremely hungry," recalled a patient.
The struggle is compounded if individuals have not adopted sustainable lifestyle or habit changes during therapy.
Widespread Use
Survey data show that a significant number of people in the UK have tried these injections in the past year, with desire being substantial.
- Use is more common among women compared to men.
- The middle-aged age group shows the greatest level of interest.
- Many obtain the drugs through private healthcare rather than public health services.
In conclusion, clinicians emphasize that while the jabs are powerful agents for shedding pounds, they are not a standalone cure and maintained weight loss relies on integrated behavioural changes.