Fresh analysis reveals that patients who stop using blockbuster slimming jabs like Wegovy and Mounjaro tend to recover shed pounds much more quickly than those who end traditional diet and exercise regimens.
Research printed in a major health publication points out that while overweight individuals frequently drop a large proportion of their total mass while using the jabs, the mass is regained at an estimated rate of nearly a kilo each month upon discontinuation.
"Individuals buying these treatments must be aware of the potential of fast weight regain when the treatment is stopped," cautioned lead investigator Dr. Susan Jebb.
This pace of recovery implies a reversion to pre-treatment weight within about a year and a half.
Comparing Approaches
The study, which looked at 37 of trials involving thousands of participants, compared the results of GLP-1 agonists with conventional dieting.
Scientists emphasize that individuals who lose weight through diet and exercise typically see a slower creep back—approximately 0.1 kg a month—after stopping.
The Reason for the Rapid Regain
Experts propose the mechanism of the drugs is key to understanding the accelerated rebound.
GLP-1 drugs copy a natural hormone called GLP-1, which moderates appetite.
"Sustained high doses of GLP-1 levels several times higher than normal may cause the system to produce less of its own natural GLP-1, and could lessen sensitivity to its actions," said Dr. Adam Collins, a dietetics expert.
"Withdrawal of this hormone supplement means hunger is uncontrolled, making overeating far more likely."
A Lifelong Disease?
The NHS advise the injections for individuals with obesity-related medical conditions, alongside recommended diet and exercise modifications.
A number of clinicians contend that, due to the high risk of relapse, the therapy might need to be life-long.
This opinion is reinforced by drug manufacturers, who note that the results "highlight the long-term character of obesity," comparing it to managing conditions like diabetes.
Patient Testimonies
People who have discontinued the medication describe a intense return of appetite.
"It was like something activating and you're instantly ravenous," said a patient.
This challenge is compounded if users have not established permanent dietary or behavioural modifications during treatment.
Widespread Use
Recent estimates indicate that millions of adults in the UK have used these injections in the past year, with interest remaining high.
- Use is greater among females compared to males.
- The 40s and 50s age group shows the highest level of interest.
- Many access the drugs through private healthcare rather than public health services.
Ultimately, clinicians stress that while GLP-1 drugs are potent tools for shedding pounds, they are not a standalone cure and long-term success hinges on combined lifestyle support.
