Users Coming Off Anti-Obesity Medications Gain Back Pounds at a Quadrupled Rate Compared to Dieters

New research suggests that patients who come off popular weight-loss injections like Wegovy and Mounjaro can put back on reduced body mass at a significantly accelerated pace than those who stop traditional lifestyle plans.

Findings released in a leading health publication demonstrates that while overweight individuals frequently drop about a fifth of their body weight while on the medication, the weight comes back at an estimated rate of nearly a kilo each month once they quit.

"Individuals using such drugs need to be informed of the danger of quick rebound weight gain when the treatment ends," warns lead investigator Dr. Susan Jebb.

Such speed of regain suggests a return to pre-treatment weight in about one and a half years.

Comparing Treatments

The research, which looked at dozens of trials involving thousands of participants, compared the outcomes of GLP-1 agonists with older methods.

Scientists emphasize that people who shed pounds through lifestyle changes alone typically experience a more gradual weight regain—around 100 grams monthly—once they finish.

The Reason for the Rapid Regain

Experts propose the mode of action of the injections is key to understanding the accelerated regain.

These medications imitate a natural hormone called glucagon-like peptide-1, which controls hunger.

"Long-term administration of GLP-1 levels far above than normal could lead to the system to generate a reduced amount of its endogenous GLP-1, and could reduce sensitivity to its actions," said Dr. Adam Collins, a nutrition researcher.

"Stopping of this hormone supplement means appetite is no longer kept in check, making overeating far more likely."

A Lifelong Disease?

Medical guidelines recommend the injections for individuals with obesity-related health risks, alongside recommended lifestyle changes.

Many experts argue that, given the likelihood of relapse, the treatment should be considered long-term.

This opinion is reinforced by drug manufacturers, who state that the findings "emphasize the persistent character of obesity," akin to managing conditions like high blood pressure.

Patient Testimonies

Users who have stopped the jabs describe a sudden return of appetite.

"It felt as if a switch that goes on and you're instantly extremely hungry," described a patient.

The struggle is exacerbated if patients have not developed permanent dietary or behavioural modifications during treatment.

Widespread Use

Recent estimates show that millions of people in the UK have tried weight-loss jabs in the past year, with interest continuing to grow.

• Adoption is greater among women than men.
• The middle-aged age group shows the greatest level of interest.
• Many access the medications through private prescriptions rather than public health services.

Ultimately, researchers caution that while these medications are powerful agents for shedding pounds, they are not a magic fix and lasting health benefits likely depends on integrated lifestyle support.