Fresh analysis indicates that patients who stop using blockbuster slimming jabs like semaglutide or tirzepatide tend to recover lost weight much more quickly than those who end conventional diet and exercise plans.
Findings released in a prominent health publication shows that while obese individuals frequently drop about a fifth of their body weight while on the medication, the mass comes back at an estimated rate of 0.8 kg per month once they quit.
"People buying these drugs must be aware of the potential of quick rebound weight gain when the treatment ends," warns lead investigator Dr. Susan Jebb.
That rate of regain suggests a return to starting mass in about 18 months.
Weighing Approaches
The study, which reviewed 37 of trials involving thousands of participants, contrasted the effects of the injectable medications with other pills.
The team note that people who shed pounds through lifestyle changes alone typically see a more gradual weight regain—perhaps 100 grams monthly—after stopping.
Understanding the Rapid Rebound
Experts believe the mechanism of the jabs accounts for the heightened regain.
These medications mimic a natural hormone called glucagon-like peptide-1, which moderates feelings of fullness.
"Sustained high doses of GLP-1 levels far above than normal could lead to the system to produce less of its endogenous GLP-1, and may also diminish sensitivity to its actions," explained Dr. Adam Collins, a nutrition expert.
"Withdrawal of this medication results in appetite is unsuppressed, making overeating far more likely."
An Ongoing Condition?
Medical guidelines recommend the jabs for people with obesity-related medical conditions, alongside prescribed lifestyle changes.
A number of clinicians say that, given the significant potential of weight regain, the treatment is often ongoing.
This opinion is echoed by drug manufacturers, who say that the findings "highlight the persistent nature of excess weight," comparing it to managing conditions like diabetes.
Patient Experiences
People who have come off the jabs explain a powerful return of hunger.
"It felt as if a switch flipping and you're instantly ravenous," recalled an individual.
This difficulty is compounded if users have not established lasting dietary or behavioural changes during therapy.
Widespread Use
Survey data suggest that millions of adults in the UK have used weight-loss jabs in the past year, with desire being substantial.
- Use is greater among females than men.
- The middle-aged age group shows the greatest usage rates.
- Many access the medications through private prescriptions rather than public health services.
Ultimately, researchers stress that while GLP-1 drugs are potent tools for weight loss, they are not a magic solution and lasting health benefits likely depends on ongoing lifestyle management.
