Fresh analysis reveals that patients who discontinue blockbuster weight-loss injections like Wegovy and Mounjaro can put back on shed pounds much more quickly than those who stop traditional diet and exercise programs.
Published data in a leading medical journal shows that while overweight individuals often shed a large proportion of their body weight while undergoing treatment, the weight is regained at an average rate of 0.8 kg per month after stopping.
"People purchasing such drugs need to be informed of the potential of rapid rebound weight gain when the therapy concludes," cautioned researcher Dr. Susan Jebb.
Such speed of recovery means a return to original mass within about 18 months.
Analyzing Approaches
The research, which reviewed dozens of studies involving over 9,000 of participants, contrasted the results of the injectable medications with other pills.
Scientists note that people who shed pounds through lifestyle changes alone typically see a less rapid weight regain—approximately 0.1 kg a month—after stopping.
Understanding the Quick Regain
Experts propose the mechanism of the injections is key to understanding the accelerated weight return.
The injections mimic a body's own chemical called GLP-1, which controls feelings of fullness.
"Long-term administration of GLP-1 concentrations several times higher than the body's typical production may cause the system to produce less of its endogenous hormone, and may also diminish sensitivity to its actions," said Dr. Adam Collins, a nutrition researcher.
"Withdrawal of this hormone supplement leads to hunger is uncontrolled, making binge eating much more probable."
An Ongoing Issue?
Health authorities suggest the injections for people with obesity-related health risks, accompanied by prescribed lifestyle changes.
Many experts contend that, due to the likelihood of relapse, the therapy is often long-term.
This opinion is reinforced by drug manufacturers, who say that the findings "highlight the persistent nature of excess weight," comparing it to managing diseases like high blood pressure.
Patient Testimonies
Individuals who have come off the medication explain a sudden return of cravings.
"I experienced a trigger that goes on and I was suddenly extremely hungry," described one woman.
This challenge is compounded if users have not established sustainable dietary or behavioural changes during therapy.
Growing Interest
Recent estimates indicate that millions of adults in the UK have tried these injections in the last 12 months, with demand continuing to grow.
- Adoption is more common among females than males.
- The middle-aged age group shows the highest level of interest.
- A large proportion obtain the medications through private prescriptions rather than the NHS.
Ultimately, researchers emphasize that while GLP-1 drugs are effective agents for weight loss, they are not a magic solution and lasting health benefits likely depends on ongoing lifestyle management.
