Fresh analysis suggests that people who come off blockbuster weight-loss injections like Wegovy and Mounjaro can put back on lost weight at a significantly accelerated pace than those who halt conventional diet and exercise plans.
Research printed in a prominent health publication shows that while overweight individuals often shed about a fifth of their total mass while using the jabs, the weight is regained at an estimated rate of 0.8 kg per month once they quit.
"Individuals purchasing such treatments should be cognizant of the danger of fast weight regain when the treatment ends," warns researcher Dr. Susan Jebb.
That rate of recovery implies a reversion to pre-treatment weight in about 18 months.
Comparing Approaches
The analysis, which examined dozens of studies involving thousands of patients, compared the effects of GLP-1 agonists with other pills.
Researchers note that individuals who lose weight through dieting generally see a slower weight regain—perhaps 100 grams monthly—once they finish.
Explaining the Fast Rebound
Doctors propose the mechanism of the jabs explains the accelerated weight return.
GLP-1 drugs imitate a body's own chemical called glucagon-like peptide-1, which helps regulate feelings of fullness.
"Sustained high doses of GLP-1 concentrations far above than the body's typical production could lead to the system to produce less of its endogenous hormone, and could lessen responsiveness to its effects," said Dr. Adam Collins, a nutrition expert.
"Stopping of this medication leads to appetite is no longer kept in check, making excessive eating much more probable."
A Lifelong Condition?
Health authorities recommend the jabs for individuals with obesity-related health risks, accompanied by prescribed lifestyle changes.
Many experts argue that, considering the high risk of weight regain, the therapy should be considered ongoing.
This view is echoed by drug manufacturers, who state that the findings "highlight the chronic character of obesity," akin to managing conditions like hypertension.
Patient Experiences
People who have come off the jabs describe a powerful return of appetite.
"It was like a switch activating and you become starving," recalled one woman.
This difficulty is compounded if individuals have not adopted lasting lifestyle or habit modifications during treatment.
Growing Use
Survey data suggest that a significant number of adults in the UK have used weight-loss jabs in the last 12 months, with demand remaining high.
- Use is more common among females than men.
- The middle-aged age group shows the greatest level of interest.
- Many access the medications through private prescriptions rather than the NHS.
Ultimately, researchers stress that while the jabs are potent agents for weight loss, they are not a permanent fix and lasting health benefits likely depends on integrated behavioural management.
