Fresh analysis suggests that patients who come off popular weight-loss injections like Wegovy and Mounjaro can put back on shed pounds much more quickly than those who halt traditional lifestyle regimens.
Published data in a prominent medical journal points out that while overweight people often shed a large proportion of their body weight while using the jabs, the weight is regained at an average rate of 0.8 kg per month once they quit.
"Individuals purchasing such drugs should be informed of the danger of rapid rebound weight gain when the treatment is stopped," cautioned expert Dr. Susan Jebb.
This pace of recovery means a reversion to starting weight in about one and a half years.
Comparing Treatments
The study, which looked at 37 of trials involving thousands of participants, compared the results of GLP-1 agonists with other pills.
Researchers emphasize that people who lose weight through lifestyle changes alone usually have a more gradual creep back—around 0.1 kg a month—after stopping.
Understanding the Fast Regain
Nutrition scientists propose the mechanism of the injections explains the amplified regain.
The injections imitate 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 might result in the body to produce less of its own natural GLP-1, and could diminish responsiveness to its effects," explained Dr. Adam Collins, a dietetics researcher.
"Discontinuation of this GLP-1 'fix' results in hunger is unsuppressed, making excessive eating far more likely."
A Chronic Issue?
Health authorities advise the jabs for people with weight-linked medical conditions, accompanied by prescribed lifestyle changes.
Professionals say that, given the high risk of relapse, the treatment should be considered life-long.
This view is echoed by pharmaceutical companies, who state that the findings "emphasize the long-term nature of obesity," akin to managing conditions like hypertension.
User Experiences
Individuals who have come off the medication report a sudden resurgence of appetite.
"I experienced a switch that goes on and I was suddenly extremely hungry," recalled an individual.
The struggle is exacerbated if patients have not established permanent lifestyle or habit changes during therapy.
Widespread Adoption
Survey data suggest that millions of people in the UK have used weight-loss jabs in the last 12 months, with desire continuing to grow.
- Use is greater among women compared to males.
- The 40s and 50s age group shows the highest usage rates.
- A large proportion obtain the medications through private healthcare rather than the NHS.
Finally, clinicians stress that while GLP-1 drugs are powerful tools for shedding pounds, they are not a magic cure and maintained weight loss hinges on combined behavioural support.
