New research reveals that individuals who come off popular GLP-1 drugs like Wegovy and Mounjaro tend to recover shed pounds at a significantly accelerated pace than those who stop conventional lifestyle plans.
Findings released in a prominent medical journal demonstrates that while obese people frequently drop about a fifth of their body weight while on the medication, the mass is regained at an average rate of nearly a kilo each month once they quit.
"Users purchasing such treatments need to be cognizant of the potential of rapid rebound weight gain when the therapy concludes," cautioned researcher Dr. Susan Jebb.
That rate of regain suggests a reversion to starting weight within about 18 months.
Weighing Approaches
The research, which reviewed 37 of trials involving thousands of patients, contrasted the effects of these new drugs with other pills.
Scientists emphasize that people who lose weight through diet and exercise typically see a less rapid weight regain—perhaps 100 grams monthly—once they finish.
Understanding the Fast Regain
Experts propose the mode of action of the jabs explains the amplified weight return.
GLP-1 drugs mimic a natural hormone called GLP-1, which helps regulate feelings of fullness.
"Artificially providing the hormone concentrations several times higher than normal could lead to the system to produce less of its own natural GLP-1, and could lessen sensitivity to its actions," noted Dr. Adam Collins, a dietetics researcher.
"Discontinuation of this GLP-1 'fix' means appetite is no longer kept in check, making overeating far more likely."
An Ongoing Condition?
The NHS recommend the injections for individuals with weight-linked medical conditions, accompanied by prescribed diet and exercise modifications.
Professionals argue that, given the likelihood of relapse, the therapy might need to be ongoing.
This view is echoed by pharmaceutical companies, who state that the findings "emphasize the persistent character of excess weight," comparing it to managing conditions like hypertension.
Patient Experiences
People who have stopped the medication report a powerful resurgence of hunger.
"I experienced a trigger flipping and you're instantly starving," described an individual.
This challenge is worsened if patients have not established sustainable dietary or behavioural changes during therapy.
Significant Adoption
Survey data show that a significant number of adults in the UK have tried these injections in the past year, with demand being substantial.
- Adoption is more common among women than males.
- The 40s and 50s age group shows the greatest usage rates.
- A large proportion obtain the medications through private prescriptions rather than the NHS.
Ultimately, researchers stress that while the jabs are potent agents for shedding pounds, they are not a permanent fix and maintained weight loss hinges on integrated lifestyle management.
