A recent study suggests that patients who come off popular weight-loss injections like Wegovy and Mounjaro may regain lost weight far faster than those who end traditional diet and exercise plans.
Findings released in a major medical journal points out that while overweight individuals can lose a large proportion of their body weight while undergoing treatment, the mass returns at an estimated rate of 0.8 kg per month after stopping.
"Users purchasing such drugs should be informed of the potential of quick rebound weight gain when the therapy ends," cautioned lead investigator Dr. Susan Jebb.
This pace of recovery suggests a reversion to pre-treatment weight in about 18 months.
Comparing Approaches
The research, which reviewed dozens of studies involving thousands of participants, contrasted the effects of GLP-1 agonists with older methods.
Scientists emphasize that people who lose weight through lifestyle changes alone usually have a less rapid weight regain—perhaps 0.1 kg a month—after stopping.
Understanding the Fast Rebound
Doctors suggest the way of the injections is key to understanding the accelerated weight return.
The injections copy a body's own chemical called GLP-1, which moderates feelings of fullness.
"Sustained high doses of the hormone levels several times higher than the body's typical production might result in the body to generate a reduced amount of its own natural hormone, and may also reduce sensitivity to its effects," noted Dr. Adam Collins, a dietetics researcher.
"Discontinuation of this GLP-1 'fix' results in appetite is uncontrolled, making excessive eating far more likely."
An Ongoing Disease?
The NHS advise the injections for people with obesity-related medical conditions, accompanied by prescribed lifestyle changes.
Many experts argue that, considering the significant potential of relapse, the treatment might need to be long-term.
This view is reinforced by pharmaceutical companies, who say that the results "emphasize the persistent nature of excess weight," akin to managing conditions like diabetes.
Patient Testimonies
Users who have stopped the medication report a intense resurgence of hunger.
"I experienced a trigger that goes on and you're instantly ravenous," said one woman.
This challenge is worsened if users have not developed lasting lifestyle or habit modifications during treatment.
Significant Adoption
Figures suggest that a significant number of people in the UK have tried weight-loss jabs in the past year, with desire remaining high.
- Use is greater among women than men.
- The 40s and 50s age group shows the greatest usage rates.
- A large proportion access the drugs through private prescriptions rather than the NHS.
Finally, clinicians stress that while these medications are effective tools for shedding pounds, they are not a magic fix and long-term success hinges on combined behavioural management.
