New research indicates that individuals who come off blockbuster GLP-1 drugs like semaglutide or tirzepatide may regain lost weight far faster than those who stop traditional lifestyle plans.
Findings released in a leading health publication points out that while obese individuals frequently drop a large proportion of their body weight while on the medication, the weight returns at an estimated rate of nearly a kilo each month once they quit.
"People using these medications must be cognizant of the danger of rapid weight regain when the therapy ends," stated expert Dr. Susan Jebb.
That rate of regain suggests a return to original mass within about 18 months.
Weighing Therapies
The research, which examined dozens of studies involving thousands of participants, compared the results of GLP-1 agonists with older methods.
The team point out that individuals who shed pounds through diet and exercise typically have a less rapid weight regain—perhaps 100 grams monthly—post-intervention.
The Reason for the Quick Rebound
Nutrition scientists suggest the mode of action of the drugs explains the amplified weight return.
GLP-1 drugs mimic a natural hormone called GLP-1, which helps regulate appetite.
"Long-term administration of the hormone concentrations several times higher than normal could lead to the body to produce less of its endogenous hormone, and may also reduce responsiveness to its actions," said Dr. Adam Collins, a dietetics specialist.
"Discontinuation of this GLP-1 'fix' leads to hunger is no longer kept in check, making excessive eating a significant risk."
A Lifelong Issue?
Medical guidelines recommend the injections for people with weight-linked health risks, alongside prescribed diet and exercise modifications.
A number of clinicians contend that, given the likelihood of relapse, the treatment is often ongoing.
This perspective is supported by drug manufacturers, who say that the results "underscore the chronic character of excess weight," comparing it to managing diseases like high blood pressure.
Patient Testimonies
Users who have come off the medication explain a powerful return of cravings.
"It felt as if a trigger that goes on and you become extremely hungry," described an individual.
This challenge is worsened if patients have not established permanent lifestyle or habit changes during treatment.
Growing Interest
Figures suggest that a significant number of people in the UK have tried weight-loss jabs in the past year, with desire remaining high.
- Use is more common among females compared to males.
- The middle-aged demographic shows the greatest level of interest.
- Many access the medications through private prescriptions rather than public health services.
Ultimately, researchers stress that while these medications are effective tools for weight loss, they are not a standalone solution and long-term success hinges on ongoing behavioural changes.
