Patients Discontinuing Slimming Medications Regain Weight at a Quadrupled Rate Compared to Those on Conventional Diets

A recent study reveals that people who stop using blockbuster GLP-1 drugs like semaglutide or tirzepatide can put back on reduced body mass at a significantly accelerated pace than those who end conventional lifestyle programs.

Research printed in a leading health publication points out that while obese people often shed about a fifth of their total mass while on the medication, the weight is regained at an estimated rate of 0.8 kg per month once they quit.

"Individuals buying such medications should be aware of the danger of fast weight regain when the therapy ends," cautioned expert Dr. Susan Jebb.

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

Weighing Treatments

The research, which examined dozens of trials involving over 9,000 of participants, contrasted the effects of GLP-1 agonists with conventional dieting.

Scientists point out that people who shed pounds through lifestyle changes alone generally experience a slower creep back—around 100 grams monthly—post-intervention.

The Reason for the Rapid Regain

Experts propose the mechanism of the drugs explains the heightened rebound.

GLP-1 drugs imitate a natural hormone called glucagon-like peptide-1, which helps regulate feelings of fullness.

"Long-term administration of the hormone levels far above than normal could lead to the system to generate a reduced amount of its endogenous GLP-1, and could lessen responsiveness to its actions," explained Dr. Adam Collins, a dietetics researcher.

"Stopping of this GLP-1 'fix' leads to appetite is no longer kept in check, making overeating far more likely."

A Lifelong Condition?

Health authorities suggest the jabs for individuals with obesity-related health risks, alongside prescribed lifestyle changes.

Many experts argue that, considering the significant potential of relapse, the therapy is often long-term.

This view is supported by drug manufacturers, who state that the findings "underscore the persistent nature of excess weight," similar to managing conditions like diabetes.

Patient Accounts

Users who have discontinued the medication explain a powerful return of hunger.

"It was like something that goes on and I was suddenly starving," said a patient.

The struggle is worsened if individuals have not established permanent dietary or behavioural modifications during therapy.

Widespread Interest

Recent estimates suggest that millions of adults in the UK have used weight-loss jabs in the last 12 months, with desire being substantial.

• Adoption is greater among females compared to males.
• The middle-aged age group shows the highest usage rates.
• A large proportion obtain the medications through private healthcare rather than the NHS.

Ultimately, experts caution that while these medications are potent agents for shedding pounds, they are not a permanent cure and lasting health benefits likely depends on ongoing behavioural management.