New research reveals that patients who stop using blockbuster weight-loss injections like Wegovy and Mounjaro can put back on lost weight much more quickly than those who end traditional diet and exercise regimens.
Published data in a leading health publication demonstrates that while overweight individuals often shed substantial amounts of their total mass while on the medication, the weight is regained at an estimated rate of 0.8 kg per month once they quit.
"Individuals buying these treatments need to be aware of the potential of fast rebound weight gain when the therapy is stopped," warns lead investigator Dr. Susan Jebb.
That rate of recovery implies a reversion to starting mass in about 18 months.
Comparing Treatments
The research, which reviewed dozens of studies involving thousands of patients, compared the outcomes of the injectable medications with conventional dieting.
The team note that individuals who shed pounds through diet and exercise typically experience a more gradual creep back—approximately 0.1 kg a month—post-intervention.
The Reason for the Rapid Rebound
Doctors propose the mode of action of the jabs explains the amplified weight return.
GLP-1 drugs copy a body's own chemical called GLP-1, which helps regulate feelings of fullness.
"Sustained high doses of GLP-1 levels far above than normal may cause the system to produce less of its own natural hormone, and could reduce responsiveness to its effects," noted Dr. Adam Collins, a dietetics specialist.
"Stopping of this GLP-1 'fix' results in appetite is unsuppressed, making overeating much more probable."
An Ongoing Disease?
The NHS advise the jabs for people with weight-linked medical conditions, alongside prescribed diet and exercise modifications.
A number of clinicians say that, considering the likelihood of relapse, the treatment is often life-long.
This perspective is echoed by drug manufacturers, who say that the results "highlight the long-term character of obesity," comparing it to managing diseases like high blood pressure.
User Accounts
Users who have come off the jabs explain a powerful resurgence of cravings.
"I experienced a trigger activating and you become ravenous," described an individual.
This challenge is exacerbated if patients have not adopted lasting dietary or behavioural modifications during therapy.
Widespread Adoption
Figures suggest that millions of adults in the UK have used these injections in the past year, with demand continuing to grow.
- Adoption is more common among women than men.
- The middle-aged age group shows the greatest usage rates.
- Many access the drugs through private prescriptions rather than public health services.
Ultimately, experts emphasize that while the jabs are powerful agents for weight loss, they are not a permanent cure and long-term success hinges on integrated behavioural support.
