Fresh analysis indicates that patients who stop using blockbuster weight-loss injections like semaglutide or tirzepatide can put back on lost weight much more quickly than those who stop traditional diet and exercise programs.
Published data in a major health publication points out that while overweight individuals can lose about a fifth of their total mass while using the jabs, the mass is regained at an average rate of 0.8 kg per month upon discontinuation.
"People using these medications should be cognizant of the danger of quick weight regain when the therapy concludes," stated lead investigator Dr. Susan Jebb.
This pace of recovery suggests a reversion to starting mass in about 18 months.
Analyzing Treatments
The analysis, which looked at dozens of studies involving over 9,000 of patients, compared the outcomes of these new drugs with conventional dieting.
Scientists point out that individuals who shed pounds through diet and exercise generally have a more gradual weight regain—approximately 0.1 kg a month—after stopping.
The Reason for the Rapid Rebound
Nutrition scientists believe the mode of action of the injections is key to understanding the amplified weight return.
These medications mimic a body's own chemical called GLP-1, which controls hunger.
"Long-term administration of GLP-1 levels several times higher than the body's typical production could lead to the system to generate a reduced amount of its endogenous hormone, and may also lessen sensitivity to its actions," said Dr. Adam Collins, a dietetics specialist.
"Withdrawal of this GLP-1 'fix' results in appetite is no longer kept in check, making overeating much more probable."
An Ongoing Issue?
Medical guidelines recommend the injections for individuals with weight-linked medical conditions, alongside recommended diet and exercise modifications.
A number of clinicians argue that, due to the significant potential of weight regain, the treatment is often long-term.
This perspective is supported by drug manufacturers, who say that the findings "highlight the long-term nature of excess weight," comparing it to managing conditions like high blood pressure.
User Testimonies
Users who have come off the medication report a sudden return of hunger.
"I experienced something activating and you're instantly extremely hungry," said one woman.
The struggle is exacerbated if patients have not adopted sustainable dietary or behavioural changes during therapy.
Growing Use
Figures indicate that a significant number of people in the UK have tried these injections in the last 12 months, with desire remaining high.
- Use is greater among females than males.
- The 40s and 50s demographic shows the highest level of interest.
- A large proportion access the drugs through private healthcare rather than public health services.
Finally, clinicians emphasize that while GLP-1 drugs are potent agents for shedding pounds, they are not a magic solution and maintained weight loss hinges on combined lifestyle changes.
