A recent study suggests that individuals who stop using blockbuster GLP-1 drugs like Mounjaro or Wegovy may regain reduced body mass at a significantly accelerated pace than those who halt conventional diet and exercise plans.
Findings released in a prominent health publication shows that while obese people often shed substantial amounts of their total mass while on the medication, the weight is regained at an estimated rate of nearly a kilo each month after stopping.
"Users buying such medications must be aware of the potential of rapid weight regain when the medication is stopped," warns lead investigator Dr. Susan Jebb.
Such speed of recovery suggests a reversion to starting mass within about a year and a half.
Comparing Therapies
The research, which looked at dozens of trials involving over 9,000 of patients, compared the effects of the injectable medications with older methods.
The team point out that individuals who lose weight through diet and exercise generally see a slower weight regain—around 100 grams monthly—after stopping.
Explaining the Rapid Regain
Experts suggest the mechanism of the injections accounts for the heightened rebound.
These medications mimic a natural hormone called GLP-1, which helps regulate hunger.
"Sustained high doses of GLP-1 levels several times higher than the body's typical production may cause the body to generate a reduced amount of its own natural GLP-1, and could reduce responsiveness to its effects," said Dr. Adam Collins, a nutrition expert.
"Withdrawal of this hormone supplement results in hunger is uncontrolled, making overeating far more likely."
A Chronic Condition?
Health authorities suggest the injections for people with obesity-related health risks, alongside recommended lifestyle changes.
Professionals say that, given the significant potential of weight regain, the therapy is often long-term.
This opinion is echoed by drug manufacturers, who state that the results "highlight the persistent character of obesity," akin to managing diseases like hypertension.
Patient Accounts
People who have stopped the jabs report a powerful return of hunger.
"It felt as if a trigger that goes on and you're instantly ravenous," said a patient.
This difficulty is worsened if patients have not developed lasting dietary or behavioural modifications during therapy.
Significant Adoption
Survey data show that a significant number of adults in the UK have tried these injections in the last 12 months, with interest continuing to grow.
- Use is higher among women compared to men.
- The middle-aged age group shows the greatest level of interest.
- A large proportion access the drugs through private healthcare rather than public health services.
Ultimately, clinicians emphasize that while these medications are potent tools for weight loss, they are not a permanent fix and long-term success hinges on integrated lifestyle management.
