A recent study indicates that individuals who discontinue popular slimming jabs like semaglutide or tirzepatide can put back on reduced body mass far faster than those who end conventional diet and exercise programs.
Findings released in a major medical journal shows that while overweight people frequently drop about a fifth of their body weight while undergoing treatment, the mass comes back at an estimated rate of nearly a kilo each month once they quit.
"People purchasing these medications should be aware of the potential of fast rebound weight gain when the treatment ends," warns lead investigator Dr. Susan Jebb.
That rate of regain suggests a return to starting weight in about one and a half years.
Comparing Treatments
The study, which looked at 37 of studies involving thousands of patients, contrasted the effects of GLP-1 agonists with other pills.
The team note that individuals who lose weight through diet and exercise usually have a more gradual creep back—perhaps 0.1 kg a month—after stopping.
Understanding the Rapid Rebound
Nutrition scientists propose the mechanism of the drugs is key to understanding the accelerated rebound.
GLP-1 drugs copy a body's own chemical called glucagon-like peptide-1, which moderates feelings of fullness.
"Artificially providing GLP-1 concentrations several times higher than normal might result in the body to produce less of its endogenous hormone, and could diminish responsiveness to its actions," explained Dr. Adam Collins, a nutrition researcher.
"Discontinuation of this hormone supplement results in appetite is uncontrolled, making excessive eating far more likely."
A Chronic Condition?
Medical guidelines recommend the injections for people with obesity-related medical conditions, alongside recommended diet and exercise modifications.
Many experts contend that, considering the significant potential of weight regain, the therapy might need to be ongoing.
This view is supported by drug manufacturers, who note that the findings "highlight the chronic nature of excess weight," comparing it to managing conditions like high blood pressure.
Patient Experiences
Users who have stopped the jabs explain a intense resurgence of appetite.
"I experienced a trigger flipping and you become ravenous," said one woman.
This difficulty is compounded if users have not developed lasting dietary or behavioural modifications during treatment.
Growing Adoption
Recent estimates suggest that a significant number of adults in the UK have tried weight-loss jabs in the last 12 months, with desire remaining high.
- Adoption is higher among women than men.
- The middle-aged demographic shows the highest usage rates.
- A large proportion access the medications through private prescriptions rather than the NHS.
Finally, experts caution that while these medications are effective agents for weight loss, they are not a permanent fix and lasting health benefits relies on integrated lifestyle changes.
