A recent study indicates that patients who come off blockbuster GLP-1 drugs like Wegovy and Mounjaro tend to recover lost weight far faster than those who halt conventional diet and exercise regimens.
Published data in a prominent health publication points out that while obese 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 these drugs should be informed of the danger of fast rebound weight gain when the treatment concludes," cautioned expert Dr. Susan Jebb.
That rate of recovery suggests a reversion to original weight within about one and a half years.
Comparing Approaches
The research, which looked at 37 of studies involving thousands of participants, compared the results of GLP-1 agonists with older methods.
The team point out that individuals who lose weight through dieting usually see a slower creep back—approximately 100 grams monthly—after stopping.
Understanding the Rapid Rebound
Nutrition scientists suggest the mode of action of the drugs accounts for the accelerated rebound.
These medications copy a body's own chemical called glucagon-like peptide-1, which moderates hunger.
"Artificially providing the hormone concentrations far above than the body's typical production could lead to the system to generate a reduced amount of its own natural GLP-1, and could reduce responsiveness to its actions," noted Dr. Adam Collins, a dietetics specialist.
"Discontinuation of this GLP-1 'fix' leads to hunger is unsuppressed, making excessive eating far more likely."
A Lifelong Issue?
The NHS recommend the injections for individuals with obesity-related medical conditions, accompanied by prescribed diet and exercise modifications.
Professionals say that, given the significant potential of weight regain, the treatment should be considered long-term.
This opinion is reinforced by drug manufacturers, who note that the results "emphasize the chronic nature of obesity," similar to managing conditions like high blood pressure.
Patient Testimonies
Users who have come off the jabs describe a intense resurgence of cravings.
"It was like something flipping and you become extremely hungry," recalled one woman.
The struggle is worsened if users have not adopted lasting dietary or behavioural changes during therapy.
Significant Use
Survey data suggest that a significant number of adults in the UK have used these injections in the last 12 months, with demand continuing to grow.
- Use is greater among females than males.
- The middle-aged demographic shows the highest usage rates.
- Many access the medications through private healthcare rather than the NHS.
Ultimately, experts caution that while the jabs are effective tools for weight loss, they are not a magic solution and long-term success likely depends on ongoing behavioural management.
