Fresh analysis reveals that people who come off blockbuster slimming jabs like Mounjaro or Wegovy can put back on shed pounds much more quickly than those who end traditional lifestyle plans.
Published data in a leading health publication demonstrates that while obese people frequently drop substantial amounts of their total mass while on the medication, the weight is regained at an average rate of 0.8 kg per month upon discontinuation.
"People buying such drugs need to be cognizant of the potential of fast weight regain when the therapy concludes," stated researcher Dr. Susan Jebb.
This pace of regain implies a reversion to pre-treatment weight within about a year and a half.
Weighing Therapies
The research, which examined 37 of trials involving thousands of participants, contrasted the outcomes of GLP-1 agonists with older methods.
Scientists emphasize that people who lose weight through lifestyle changes alone typically have a less rapid creep back—around 100 grams monthly—after stopping.
The Reason for the Fast Rebound
Nutrition scientists suggest the mode of action of the injections explains the accelerated weight return.
The injections copy a body's own chemical called GLP-1, which moderates appetite.
"Artificially providing the hormone levels far above than normal could lead to the system to generate a reduced amount of its endogenous hormone, and could lessen sensitivity to its actions," said Dr. Adam Collins, a nutrition specialist.
"Discontinuation of this medication results in appetite is uncontrolled, making excessive eating a significant risk."
A Lifelong Issue?
The NHS recommend the jabs for people with obesity-related medical conditions, accompanied by recommended lifestyle changes.
Professionals argue that, due to the significant potential of relapse, the treatment is often long-term.
This view is supported by pharmaceutical companies, who state that the results "underscore the long-term character of excess weight," comparing it to managing conditions like high blood pressure.
Patient Experiences
Individuals who have discontinued the medication describe a intense resurgence of appetite.
"I experienced something flipping and you become extremely hungry," said a patient.
This challenge is compounded if patients have not established permanent dietary or behavioural modifications during therapy.
Growing Interest
Figures suggest that millions of people in the UK have tried weight-loss jabs in the past year, with desire continuing to grow.
- Use is greater among women than men.
- The 40s and 50s age group shows the greatest usage rates.
- Many access the drugs through private healthcare rather than public health services.
Ultimately, clinicians caution that while the jabs are potent agents for shedding pounds, they are not a magic cure and lasting health benefits likely depends on ongoing behavioural changes.