New research suggests that people who come off blockbuster slimming jabs like Mounjaro or Wegovy tend to recover reduced body mass far faster than those who halt traditional lifestyle regimens.
Published data in a prominent health publication demonstrates that while obese people often shed substantial amounts of their total mass while undergoing treatment, the mass is regained at an estimated rate of 0.8 kg per month after stopping.
"Users using these treatments need to be cognizant of the potential of quick weight regain when the treatment ends," warns lead investigator Dr. Susan Jebb.
That rate of regain suggests a reversion to starting mass in about one and a half years.
Weighing Treatments
The analysis, which looked at 37 of studies involving thousands of patients, compared the effects of the injectable medications with older methods.
The team note that people who shed pounds through diet and exercise generally experience a slower creep back—perhaps 100 grams monthly—after stopping.
Explaining the Quick Rebound
Experts propose the mode of action of the drugs accounts for the accelerated regain.
These medications copy a body's own chemical called GLP-1, which controls feelings of fullness.
"Artificially providing GLP-1 levels far above than the body's typical production may cause the body to produce less of its endogenous hormone, and could reduce responsiveness to its actions," explained Dr. Adam Collins, a dietetics researcher.
"Stopping of this GLP-1 'fix' results in appetite is no longer kept in check, making overeating far more likely."
An Ongoing Disease?
Medical guidelines advise the injections for individuals with weight-linked medical conditions, accompanied by recommended lifestyle changes.
Professionals argue that, given the significant potential of weight regain, the treatment is often life-long.
This opinion is echoed by pharmaceutical companies, who say that the findings "highlight the chronic nature of excess weight," comparing it to managing diseases like high blood pressure.
Patient Accounts
Individuals who have come off the medication report a sudden resurgence of appetite.
"I experienced something that goes on and you become ravenous," recalled one woman.
The struggle is worsened if individuals have not adopted permanent lifestyle or habit changes during treatment.
Widespread Use
Survey data show that a significant number of adults in the UK have used these injections in the last 12 months, with desire remaining high.
- Adoption is more common among women compared to males.
- The 40s and 50s demographic shows the greatest usage rates.
- Many obtain the medications through private healthcare rather than the NHS.
Ultimately, researchers emphasize that while these medications are effective agents for weight loss, they are not a standalone fix and maintained weight loss relies on ongoing behavioural changes.
