New research reveals that people who come off blockbuster GLP-1 drugs like semaglutide or tirzepatide may regain reduced body mass far faster than those who halt conventional diet and exercise programs.
Published data in a prominent health publication shows that while overweight people frequently drop a large proportion of their total mass while undergoing treatment, the mass is regained at an average rate of nearly a kilo each month after stopping.
"Users using such treatments need to be aware of the danger of rapid rebound weight gain when the therapy concludes," warns expert Dr. Susan Jebb.
Such speed of regain implies a return to original weight in about one and a half years.
Analyzing Approaches
The research, which looked at dozens of trials involving thousands of participants, contrasted the results of GLP-1 agonists with other pills.
Scientists point out that people who lose weight through lifestyle changes alone generally see a less rapid creep back—around 0.1 kg a month—once they finish.
Explaining the Quick Rebound
Doctors propose the way of the drugs accounts for the heightened regain.
The injections copy a natural hormone called GLP-1, which moderates hunger.
"Artificially providing the hormone concentrations far above than the body's typical production may cause the system to generate a reduced amount of its endogenous hormone, and could lessen sensitivity to its effects," explained Dr. Adam Collins, a nutrition expert.
"Withdrawal of this medication leads to appetite is unsuppressed, making excessive eating a significant risk."
A Chronic Disease?
Health authorities advise the injections for individuals with weight-linked medical conditions, alongside recommended diet and exercise modifications.
A number of clinicians say that, considering the significant potential of relapse, the treatment is often long-term.
This view is reinforced by pharmaceutical companies, who state that the findings "emphasize the long-term character of excess weight," comparing it to managing conditions like high blood pressure.
User Experiences
People who have discontinued the medication explain a powerful return of hunger.
"I experienced a switch that goes on and I was suddenly starving," recalled a patient.
This challenge is worsened if patients have not developed lasting lifestyle or habit modifications during treatment.
Growing Interest
Survey data show that a significant number of adults in the UK have used these injections in the last 12 months, with demand remaining high.
- Use is greater among women than males.
- The 40s and 50s age group shows the greatest usage rates.
- Many obtain the drugs through private prescriptions rather than public health services.
Finally, clinicians stress that while the jabs are effective agents for shedding pounds, they are not a standalone fix and lasting health benefits relies on combined behavioural changes.
