Users Stopping Anti-Obesity Injections Regain Pounds at a Quadrupled Rate Than Dieters

New research indicates that patients who discontinue popular GLP-1 drugs like semaglutide or tirzepatide tend to recover shed pounds much more quickly than those who end conventional diet and exercise regimens.

Findings released in a major health publication points out that while obese individuals often shed about a fifth of their body weight while undergoing treatment, the weight is regained at an estimated rate of 0.8 kg per month once they quit.

"People buying these treatments must be aware of the potential of fast rebound weight gain when the therapy is stopped," warns researcher Dr. Susan Jebb.

That rate of recovery means a reversion to pre-treatment mass within about 18 months.

Weighing Approaches

The research, which looked at dozens of studies involving over 9,000 of patients, contrasted the results of GLP-1 agonists with conventional dieting.

The team emphasize that people who lose weight through dieting generally have a slower weight regain—around 0.1 kg a month—once they finish.

The Reason for the Fast Rebound

Nutrition scientists suggest the mechanism of the drugs explains the accelerated regain.

The injections mimic a natural hormone called GLP-1, which moderates appetite.

"Long-term administration of GLP-1 levels several times higher than normal might result in the body to produce less of its endogenous GLP-1, and could diminish sensitivity to its actions," explained Dr. Adam Collins, a dietetics expert.

"Stopping of this medication leads to appetite is unsuppressed, making overeating far more likely."

An Ongoing Disease?

Health authorities advise the jabs for individuals with obesity-related medical conditions, accompanied by prescribed diet and exercise modifications.

Professionals contend that, given the significant potential of relapse, the treatment is often ongoing.

This view is supported by pharmaceutical companies, who state that the findings "emphasize the chronic nature of excess weight," akin to managing diseases like hypertension.

Patient Accounts

People who have come off the jabs describe a powerful return of appetite.

"It felt as if a switch that goes on and you're instantly ravenous," recalled a patient.

This challenge is exacerbated if patients have not adopted sustainable lifestyle or habit modifications during treatment.

Widespread Use

Survey data indicate that millions of adults in the UK have tried these injections in the past year, with desire remaining high.

• Adoption is higher among women than males.
• The middle-aged age group shows the highest level of interest.
• Many obtain the medications through private healthcare rather than the NHS.

Finally, clinicians emphasize that while these medications are potent agents for weight loss, they are not a magic cure and long-term success hinges on ongoing behavioural changes.