A recent study suggests that individuals who stop using popular weight-loss injections like Mounjaro or Wegovy tend to recover lost weight far faster than those who halt traditional lifestyle programs.
Research printed in a major health publication points out that while obese individuals often shed a large proportion of their body weight while on the medication, the mass is regained at an average rate of nearly a kilo each month after stopping.
"People purchasing such drugs need to be aware of the potential of quick rebound weight gain when the therapy is stopped," cautioned expert Dr. Susan Jebb.
This pace of regain implies a reversion to pre-treatment weight within about 18 months.
Comparing Therapies
The analysis, which reviewed 37 of trials involving thousands of patients, compared the effects of GLP-1 agonists with older methods.
The team emphasize that people who lose weight through diet and exercise usually have a more gradual weight regain—perhaps 0.1 kg a month—after stopping.
Understanding the Quick Regain
Nutrition scientists believe the mechanism of the jabs accounts for the heightened rebound.
These medications mimic a body's own chemical called GLP-1, which helps regulate hunger.
"Artificially providing the hormone levels several times higher than the body's typical production could lead to the system to generate a reduced amount of its own natural GLP-1, and may also reduce responsiveness to its actions," noted Dr. Adam Collins, a dietetics expert.
"Stopping of this GLP-1 'fix' means appetite is uncontrolled, making overeating a significant risk."
A Lifelong Disease?
Medical guidelines advise the jabs for individuals with obesity-related health risks, alongside prescribed lifestyle changes.
A number of clinicians contend that, considering the high risk of weight regain, the treatment is often long-term.
This view is reinforced by drug manufacturers, who state that the results "emphasize the persistent nature of obesity," similar to managing diseases like high blood pressure.
Patient Experiences
Individuals who have come off the jabs describe a sudden return of appetite.
"It felt as if a trigger flipping and you become extremely hungry," described a patient.
This difficulty is compounded if individuals have not adopted sustainable dietary or behavioural modifications during therapy.
Widespread Adoption
Figures suggest that millions of people in the UK have tried weight-loss jabs in the past year, with desire continuing to grow.
- Adoption is higher among females than males.
- The 40s and 50s demographic shows the greatest usage rates.
- A large proportion access the medications through private healthcare rather than the NHS.
Ultimately, experts caution that while the jabs are effective tools for weight loss, they are not a permanent cure and maintained weight loss relies on ongoing lifestyle changes.
