Fresh analysis reveals that individuals who come off blockbuster GLP-1 drugs like semaglutide or tirzepatide can put back on shed pounds much more quickly than those who end conventional lifestyle plans.
Research printed in a leading medical journal points out that while overweight individuals frequently drop a large proportion of their body weight while using the jabs, the weight is regained at an estimated rate of 0.8 kg per month upon discontinuation.
"People using these drugs should be informed of the potential of quick rebound weight gain when the treatment concludes," stated expert Dr. Susan Jebb.
This pace of recovery means a return to starting weight within about a year and a half.
Comparing Therapies
The research, which looked at dozens of trials involving thousands of patients, contrasted the outcomes of the injectable medications with older methods.
The team point out that individuals who shed pounds through lifestyle changes alone generally experience a slower weight regain—approximately 100 grams monthly—post-intervention.
The Reason for the Quick Rebound
Nutrition scientists suggest the mode of action of the drugs is key to understanding the amplified rebound.
GLP-1 drugs mimic a body's own chemical called glucagon-like peptide-1, which controls feelings of fullness.
"Sustained high doses of the hormone levels far above than the body's typical production might result in the body to produce less of its endogenous hormone, and could reduce responsiveness to its actions," said Dr. Adam Collins, a nutrition expert.
"Discontinuation of this medication results in hunger is no longer kept in check, making excessive eating far more likely."
A Lifelong Condition?
Medical guidelines advise the injections for people with obesity-related health risks, alongside recommended diet and exercise modifications.
A number of clinicians argue that, due to the likelihood of weight regain, the therapy is often life-long.
This view is echoed by drug manufacturers, who state that the findings "emphasize the persistent nature of excess weight," akin to managing diseases like high blood pressure.
Patient Testimonies
Individuals who have stopped the jabs explain a powerful resurgence of appetite.
"It was like a switch activating and you become ravenous," said an individual.
The struggle is compounded if individuals have not adopted lasting dietary or behavioural modifications during therapy.
Significant Interest
Survey data suggest that millions of adults in the UK have used weight-loss jabs in the last 12 months, with interest remaining high.
- Use is greater among females compared to men.
- The middle-aged age group shows the greatest level of interest.
- A large proportion obtain the medications through private healthcare rather than the NHS.
In conclusion, researchers caution that while GLP-1 drugs are potent tools for shedding pounds, they are not a permanent solution and maintained weight loss likely depends on combined behavioural changes.
