Fresh analysis suggests that individuals who discontinue blockbuster weight-loss injections like Wegovy and Mounjaro may regain lost weight at a significantly accelerated pace than those who stop conventional lifestyle programs.
Research printed in a prominent medical journal points out that while overweight people often shed substantial amounts of their total mass while using the jabs, the mass comes back at an average rate of nearly a kilo each month upon discontinuation.
"People buying such drugs must be aware of the potential of quick rebound weight gain when the treatment ends," stated expert Dr. Susan Jebb.
Such speed of regain implies a return to starting weight within about a year and a half.
Analyzing Approaches
The research, which examined dozens of studies involving over 9,000 of patients, compared the effects of GLP-1 agonists with older methods.
The team note that individuals who lose weight through lifestyle changes alone generally have a more gradual weight regain—around 100 grams monthly—post-intervention.
Understanding the Rapid Rebound
Experts propose the mode of action of the injections explains the amplified rebound.
The injections imitate a natural hormone called GLP-1, which controls appetite.
"Artificially providing the hormone levels far above than normal might result in the system to generate a reduced amount of its own natural GLP-1, and could diminish sensitivity to its actions," noted Dr. Adam Collins, a nutrition specialist.
"Stopping of this GLP-1 'fix' means hunger is unsuppressed, making excessive eating far more likely."
A Lifelong Issue?
The NHS suggest the injections for people with obesity-related medical conditions, accompanied by prescribed lifestyle changes.
Professionals say that, given the significant potential of weight regain, the treatment is often long-term.
This opinion is supported by drug manufacturers, who state that the results "underscore the long-term character of obesity," akin to managing conditions like high blood pressure.
Patient Accounts
Individuals who have discontinued the jabs describe a intense resurgence of hunger.
"I experienced something flipping and you become ravenous," said a patient.
This challenge is compounded if users have not adopted lasting dietary or behavioural changes during treatment.
Growing Interest
Figures indicate that millions of people in the UK have used weight-loss jabs in the last 12 months, with interest remaining high.
- Use is more common among females than males.
- The 40s and 50s age group shows the greatest level of interest.
- A large proportion access the medications through private healthcare rather than public health services.
Finally, researchers emphasize that while the jabs are powerful agents for weight loss, they are not a permanent fix and long-term success hinges on ongoing lifestyle changes.
