A recent study indicates that people who come off blockbuster weight-loss injections like Mounjaro or Wegovy can put back on lost weight far faster than those who end conventional diet and exercise programs.
Published data in a prominent medical journal points out that while obese people often shed substantial amounts of their body weight while undergoing treatment, the mass is regained at an estimated rate of 0.8 kg per month after stopping.
"Individuals using such medications must be aware of the danger of fast weight regain when the treatment ends," cautioned researcher Dr. Susan Jebb.
That rate of regain suggests a reversion to starting mass within about a year and a half.
Comparing Therapies
The research, which examined dozens of trials involving over 9,000 of patients, contrasted the results of GLP-1 agonists with conventional dieting.
Scientists note that individuals who shed pounds through lifestyle changes alone usually experience a slower creep back—around 100 grams monthly—after stopping.
Explaining the Fast Regain
Nutrition scientists believe the mechanism of the drugs is key to understanding the heightened weight return.
The injections copy a body's own chemical called GLP-1, which helps regulate feelings of fullness.
"Long-term administration of GLP-1 levels far above than normal may cause the system to produce less of its endogenous hormone, and may also reduce responsiveness to its actions," noted Dr. Adam Collins, a dietetics expert.
"Discontinuation of this hormone supplement results in appetite is uncontrolled, making excessive eating far more likely."
A Chronic Condition?
Health authorities suggest the jabs for people with obesity-related health risks, alongside recommended lifestyle changes.
A number of clinicians say that, given the significant potential of weight regain, the treatment should be considered ongoing.
This perspective is echoed by drug manufacturers, who state that the results "underscore the persistent character of excess weight," akin to managing diseases like high blood pressure.
Patient Experiences
Individuals who have discontinued the medication describe a intense return of cravings.
"It was like something activating and you're instantly ravenous," recalled an individual.
This difficulty is exacerbated if users have not adopted permanent dietary or behavioural changes during therapy.
Widespread Use
Survey data indicate that a significant number of people in the UK have tried these injections in the last 12 months, with demand continuing to grow.
- Adoption is higher among women than men.
- The middle-aged demographic shows the greatest level of interest.
- Many obtain the drugs through private prescriptions rather than public health services.
Ultimately, researchers caution that while the jabs are potent agents for shedding pounds, they are not a permanent cure and lasting health benefits relies on integrated lifestyle support.
