A recent study indicates that people who stop using blockbuster GLP-1 drugs like semaglutide or tirzepatide can put back on lost weight far faster than those who halt traditional lifestyle programs.
Published data in a leading health publication demonstrates that while overweight individuals often shed a large proportion of their total mass while using the jabs, the weight is regained at an estimated rate of nearly a kilo each month after stopping.
"People purchasing these treatments should be aware of the potential of quick weight regain when the medication ends," cautioned lead investigator Dr. Susan Jebb.
This pace of regain suggests a reversion to pre-treatment mass within about 18 months.
Comparing Therapies
The analysis, which examined dozens of studies involving thousands of patients, compared the outcomes of these new drugs with conventional dieting.
The team point out that individuals who lose weight through diet and exercise generally have a more gradual creep back—approximately 0.1 kg a month—once they finish.
The Reason for the Rapid Rebound
Doctors believe the mode of action of the jabs explains the amplified regain.
These medications imitate a body's own chemical called GLP-1, which controls hunger.
"Sustained high doses of GLP-1 levels several times higher than normal may cause the body to produce less of its own natural hormone, and may also reduce sensitivity to its actions," explained Dr. Adam Collins, a dietetics expert.
"Discontinuation of this medication results in hunger is no longer kept in check, making overeating much more probable."
A Lifelong Condition?
Medical guidelines advise the jabs for people with weight-linked medical conditions, alongside prescribed lifestyle changes.
A number of clinicians argue that, given the significant potential of weight regain, the therapy should be considered life-long.
This view is reinforced by pharmaceutical companies, who note that the results "highlight the persistent character of excess weight," comparing it to managing conditions like hypertension.
Patient Experiences
Individuals who have discontinued the medication explain a powerful resurgence of hunger.
"I experienced a switch that goes on and you're instantly ravenous," described a patient.
The struggle is exacerbated if individuals have not developed lasting lifestyle or habit modifications during therapy.
Growing Adoption
Figures suggest that a significant number of people in the UK have tried these injections in the past year, with interest remaining high.
- Use is greater among women than men.
- The middle-aged age group shows the greatest level of interest.
- Many obtain the drugs through private prescriptions rather than the NHS.
Finally, clinicians emphasize that while these medications are potent tools for shedding pounds, they are not a magic cure and long-term success likely depends on combined lifestyle changes.
