Users Stopping Weight-Loss Jabs Gain Back Weight Far More Rapidly Than People Using Diet and Exercise

Fresh analysis suggests that people who discontinue new GLP-1 drugs like Mounjaro or Wegovy may regain lost weight much more quickly than those who stop conventional diet and exercise regimens.

Published data in a prominent medical journal points out that while obese individuals often shed about a fifth of their total mass while using the jabs, the weight comes back at an average rate of nearly a kilo each month after stopping.

"Users using these treatments must be informed of the danger of fast rebound weight gain when the medication ends," cautioned lead investigator Dr. Susan Jebb.

That rate of regain means a reversion to pre-treatment weight within about a year and a half.

Comparing Treatments

The analysis, which examined dozens of trials involving over 9,000 of patients, compared the results of GLP-1 agonists with older methods.

The team emphasize that people who lose weight through dieting generally see a more gradual creep back—approximately 100 grams monthly—once they finish.

Understanding the Fast Regain

Doctors propose the mode of action of the injections accounts for the accelerated rebound.

The injections imitate a body's own chemical called glucagon-like peptide-1, which controls feelings of fullness.

"Sustained high doses of GLP-1 concentrations several times higher than the body's typical production might result in the body to generate a reduced amount of its own natural GLP-1, and may also diminish sensitivity to its effects," noted Dr. Adam Collins, a nutrition researcher.

"Withdrawal of this hormone supplement leads to appetite is unsuppressed, making excessive eating much more probable."

A Lifelong Condition?

The NHS suggest the injections for people with weight-linked medical conditions, alongside prescribed diet and exercise modifications.

Professionals contend that, considering the high risk of weight regain, the therapy might need to be ongoing.

This opinion is supported by pharmaceutical companies, who say that the results "underscore the long-term character of excess weight," comparing it to managing conditions like diabetes.

Patient Testimonies

People who have come off the jabs report a intense return of cravings.

"It felt as if a switch activating and I was suddenly extremely hungry," said a patient.

This difficulty is worsened if users have not developed sustainable dietary or behavioural modifications during therapy.

Widespread Use

Survey data suggest that millions of adults in the UK have used weight-loss jabs in the last 12 months, with interest remaining high.

• Use is more common among women compared to men.
• The 40s and 50s age group shows the greatest level of interest.
• Many obtain the medications through private prescriptions rather than the NHS.

Ultimately, clinicians caution that while the jabs are powerful tools for shedding pounds, they are not a permanent fix and long-term success likely depends on combined lifestyle management.