New research suggests that people who stop using new slimming jabs like semaglutide or tirzepatide can put back on reduced body mass at a significantly accelerated pace than those who halt conventional diet and exercise regimens.
Research printed in a leading medical journal points out that while overweight people frequently drop substantial amounts of their body weight while on the medication, the weight is regained at an estimated rate of nearly a kilo each month upon discontinuation.
"Users using such medications should be informed of the danger of fast rebound weight gain when the therapy ends," warns lead investigator Dr. Susan Jebb.
Such speed of recovery implies a return to pre-treatment weight in about one and a half years.
Comparing Treatments
The analysis, which reviewed dozens of studies involving thousands of patients, contrasted the results of these new drugs with older methods.
Scientists point out that people who shed pounds through dieting typically have a more gradual weight regain—perhaps 100 grams monthly—post-intervention.
Understanding the Fast Regain
Experts believe the way of the drugs is key to understanding the heightened rebound.
The injections mimic a body's own chemical called GLP-1, which moderates feelings of fullness.
"Long-term administration of GLP-1 concentrations several times higher than normal may cause the body to produce less of its own natural GLP-1, and may also reduce responsiveness to its actions," said Dr. Adam Collins, a dietetics specialist.
"Withdrawal of this GLP-1 'fix' results in hunger is no longer kept in check, making binge eating much more probable."
A Lifelong Disease?
The NHS advise the injections for individuals with weight-linked health risks, accompanied by prescribed lifestyle changes.
A number of clinicians contend that, given the high risk of relapse, the treatment is often life-long.
This opinion is echoed by pharmaceutical companies, who state that the results "underscore the long-term nature of obesity," similar to managing diseases like high blood pressure.
Patient Testimonies
Individuals who have come off the medication describe a sudden return of appetite.
"I experienced a trigger flipping and you become ravenous," said a patient.
This difficulty is compounded if users have not developed lasting dietary or behavioural modifications during therapy.
Widespread Adoption
Survey data show that millions of people in the UK have tried weight-loss jabs in the past year, with desire remaining high.
- Use is more common among females than men.
- The 40s and 50s age group shows the highest level of interest.
- A large proportion obtain the medications through private prescriptions rather than public health services.
Finally, experts stress that while these medications are powerful agents for weight loss, they are not a permanent fix and maintained weight loss relies on integrated behavioural support.