Fresh analysis reveals that individuals who stop using popular slimming jabs like Wegovy and Mounjaro tend to recover reduced body mass at a significantly accelerated pace than those who halt traditional lifestyle plans.
Published data in a leading medical journal shows that while overweight individuals often shed substantial amounts of their body weight while undergoing treatment, the mass comes back at an average rate of nearly a kilo each month after stopping.
"Users purchasing such drugs need to be aware of the potential of fast rebound weight gain when the medication is stopped," cautioned expert Dr. Susan Jebb.
Such speed of regain means a return to pre-treatment weight in about one and a half years.
Comparing Therapies
The research, which looked at dozens of studies involving thousands of patients, contrasted the effects of the injectable medications with older methods.
Scientists emphasize that individuals who lose weight through diet and exercise generally experience a more gradual creep back—perhaps 0.1 kg a month—once they finish.
Explaining the Fast Regain
Nutrition scientists suggest the mechanism of the jabs is key to understanding the amplified weight return.
GLP-1 drugs mimic a body's own chemical called GLP-1, which controls feelings of fullness.
"Long-term administration of GLP-1 levels several times higher than the body's typical production might result in the system to generate a reduced amount of its endogenous hormone, and could reduce sensitivity to its effects," said Dr. Adam Collins, a dietetics specialist.
"Discontinuation of this GLP-1 'fix' leads to hunger is unsuppressed, making binge eating far more likely."
An Ongoing Issue?
Medical guidelines recommend the injections for individuals with weight-linked medical conditions, alongside recommended lifestyle changes.
A number of clinicians contend that, considering the likelihood of relapse, the therapy should be considered life-long.
This view is supported by drug manufacturers, who state that the findings "underscore the chronic nature of obesity," akin to managing conditions like hypertension.
Patient Testimonies
Individuals who have come off the medication describe a powerful resurgence of cravings.
"It was like a trigger that goes on and you're instantly extremely hungry," recalled an individual.
This challenge is exacerbated if users have not established sustainable dietary or behavioural modifications during therapy.
Widespread Use
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.
- Adoption is more common among women than men.
- The 40s and 50s demographic shows the greatest usage rates.
- A large proportion obtain the drugs through private prescriptions rather than public health services.
Finally, researchers stress that while GLP-1 drugs are effective agents for weight loss, they are not a standalone fix and maintained weight loss likely depends on integrated lifestyle management.
