New research reveals that patients who stop using blockbuster GLP-1 drugs like semaglutide or tirzepatide tend to recover lost weight far faster than those who stop traditional lifestyle plans.
Research printed in a major medical journal demonstrates that while overweight individuals can lose a large proportion of their total mass while on the medication, the mass comes back at an average rate of 0.8 kg per month upon discontinuation.
"Individuals purchasing these medications need to be informed of the potential of quick weight regain when the therapy concludes," stated lead investigator Dr. Susan Jebb.
Such speed of regain implies a return to pre-treatment mass in about a year and a half.
Analyzing Approaches
The research, which examined dozens of trials involving thousands of patients, compared the results of the injectable medications with conventional dieting.
Scientists note that individuals who lose weight through dieting usually experience a more gradual weight regain—around 100 grams monthly—once they finish.
Explaining the Fast Rebound
Nutrition scientists propose the mechanism of the jabs explains the accelerated regain.
The injections mimic a body's own chemical called glucagon-like peptide-1, which controls appetite.
"Artificially providing the hormone levels several times higher than the body's typical production might result in the system to produce less of its own natural GLP-1, and may also lessen responsiveness to its actions," said Dr. Adam Collins, a nutrition specialist.
"Discontinuation of this GLP-1 'fix' means appetite is uncontrolled, making overeating much more probable."
A Lifelong Issue?
Health authorities advise the injections for people with obesity-related medical conditions, alongside prescribed lifestyle changes.
Professionals contend that, due to the likelihood of weight regain, the treatment should be considered ongoing.
This perspective is reinforced by pharmaceutical companies, who say that the results "underscore the long-term character of excess weight," comparing it to managing diseases like high blood pressure.
User Accounts
Individuals who have come off the jabs describe a intense return of cravings.
"It felt as if a switch flipping and you're instantly extremely hungry," said a patient.
The struggle is exacerbated if individuals have not adopted sustainable lifestyle or habit modifications during treatment.
Growing Interest
Recent estimates suggest that a significant number of adults in the UK have used these injections in the past year, with desire continuing to grow.
- Use is greater among females compared to men.
- The middle-aged age group shows the highest usage rates.
- A large proportion obtain the medications through private healthcare rather than the NHS.
Ultimately, researchers caution that while the jabs are effective tools for shedding pounds, they are not a standalone cure and long-term success hinges on ongoing behavioural changes.
