Fresh analysis reveals that patients who discontinue new weight-loss injections like Wegovy and Mounjaro tend to recover shed pounds at a significantly accelerated pace than those who stop traditional diet and exercise regimens.
Research printed in a prominent medical journal points out that while overweight individuals can lose substantial amounts of their total mass while undergoing treatment, the weight comes back at an average rate of 0.8 kg per month once they quit.
"Users buying these drugs need to be aware of the potential of quick rebound weight gain when the therapy is stopped," stated researcher Dr. Susan Jebb.
Such speed of regain implies a reversion to original weight in about 18 months.
Weighing Therapies
The study, which examined 37 of studies involving thousands of participants, contrasted the effects of GLP-1 agonists with older methods.
Researchers emphasize that individuals who shed pounds through lifestyle changes alone generally have a less rapid creep back—around 0.1 kg a month—after stopping.
The Reason for the Rapid Regain
Experts suggest the mode of action of the injections is key to understanding the accelerated rebound.
These medications imitate a natural hormone called glucagon-like peptide-1, which moderates feelings of fullness.
"Artificially providing GLP-1 levels several times higher than the body's typical production might result in the system to produce less of its endogenous GLP-1, and could lessen sensitivity to its actions," noted Dr. Adam Collins, a dietetics specialist.
"Stopping of this medication results in hunger is uncontrolled, making overeating a significant risk."
A Chronic Disease?
Health authorities advise the jabs for individuals with obesity-related health risks, alongside prescribed diet and exercise modifications.
A number of clinicians argue that, considering the high risk of weight regain, the treatment should be considered long-term.
This perspective is supported by drug manufacturers, who note that the results "underscore the persistent nature of obesity," akin to managing conditions like hypertension.
Patient Accounts
Users who have come off the jabs report a sudden resurgence of hunger.
"It felt as if a trigger that goes on and I was suddenly starving," recalled an individual.
The struggle is compounded if users have not established sustainable dietary or behavioural modifications during treatment.
Growing Use
Recent estimates show that a significant number of people in the UK have used weight-loss jabs in the past year, with interest continuing to grow.
- Adoption is higher among females than men.
- The 40s and 50s demographic shows the greatest level of interest.
- Many access the drugs through private prescriptions rather than public health services.
Finally, clinicians stress that while the jabs are effective tools for shedding pounds, they are not a permanent cure and maintained weight loss hinges on ongoing behavioural changes.
