Fresh analysis indicates that individuals who discontinue popular weight-loss injections like Wegovy and Mounjaro tend to recover shed pounds much more quickly than those who end conventional diet and exercise plans.
Published data in a prominent health publication points out that while obese individuals frequently drop a large proportion of their body weight while on the medication, the weight is regained at an estimated rate of 0.8 kg per month after stopping.
"Individuals using these treatments need to be informed of the danger of fast rebound weight gain when the treatment ends," warns lead investigator Dr. Susan Jebb.
Such speed of recovery implies a reversion to original weight in about a year and a half.
Weighing Approaches
The research, which examined dozens of trials involving thousands of participants, compared the outcomes of these new drugs with older methods.
Scientists note that individuals who lose weight through diet and exercise generally have a less rapid weight regain—around 100 grams monthly—once they finish.
Understanding the Rapid Regain
Doctors suggest the way of the jabs explains the amplified regain.
The injections imitate a body's own chemical called glucagon-like peptide-1, which controls appetite.
"Sustained high doses of the hormone concentrations several times higher than normal might result in the system to generate a reduced amount of its endogenous hormone, and may also lessen sensitivity to its actions," noted Dr. Adam Collins, a nutrition specialist.
"Discontinuation of this medication means hunger is no longer kept in check, making binge eating far more likely."
A Chronic Issue?
The NHS recommend the jabs for people with obesity-related medical conditions, alongside prescribed lifestyle changes.
Professionals contend that, due to the high risk of relapse, the treatment might need to be life-long.
This opinion is echoed by drug manufacturers, who note that the findings "underscore the long-term character of obesity," comparing it to managing diseases like diabetes.
Patient Testimonies
People who have come off the medication report a sudden resurgence of hunger.
"It was like a trigger flipping and you're instantly starving," said a patient.
The struggle is worsened if patients have not developed sustainable dietary or behavioural modifications during treatment.
Growing Adoption
Survey data show that a significant number of adults in the UK have used weight-loss jabs in the last 12 months, with interest being substantial.
- Adoption is higher among females than males.
- The middle-aged demographic shows the greatest level of interest.
- A large proportion obtain the drugs through private prescriptions rather than public health services.
Finally, researchers emphasize that while GLP-1 drugs are powerful agents for weight loss, they are not a standalone fix and lasting health benefits likely depends on combined lifestyle management.
