Fresh analysis indicates that individuals who stop using popular slimming jabs like semaglutide or tirzepatide tend to recover lost weight far faster than those who halt traditional lifestyle programs.
Research printed in a prominent health publication shows that while obese individuals frequently drop about a fifth of their body weight while undergoing treatment, the weight returns at an estimated rate of 0.8 kg per month upon discontinuation.
"Individuals purchasing such drugs must be aware of the danger of rapid weight regain when the treatment is stopped," warns expert Dr. Susan Jebb.
Such speed of recovery implies a reversion to pre-treatment weight within about 18 months.
Weighing Therapies
The research, which looked at 37 of studies involving thousands of participants, compared the results of these new drugs with older methods.
The team emphasize that people who lose weight through dieting generally see a more gradual weight regain—perhaps 0.1 kg a month—post-intervention.
Understanding the Quick Rebound
Experts believe the mode of action of the jabs accounts for the amplified regain.
These medications mimic a natural hormone called glucagon-like peptide-1, which moderates appetite.
"Sustained high doses of the hormone concentrations far above than the body's typical production might result in the system to generate a reduced amount of its endogenous GLP-1, and may also diminish responsiveness to its effects," explained Dr. Adam Collins, a nutrition expert.
"Discontinuation of this GLP-1 'fix' results in appetite is unsuppressed, making excessive eating a significant risk."
An Ongoing Issue?
Health authorities suggest the injections for people with obesity-related health risks, alongside prescribed lifestyle changes.
Professionals say that, given the likelihood of weight regain, the therapy might need to be ongoing.
This view is reinforced by pharmaceutical companies, who note that the results "underscore the persistent nature of obesity," comparing it to managing diseases like high blood pressure.
Patient Experiences
People who have stopped the jabs describe a powerful resurgence of appetite.
"I experienced something flipping and I was suddenly extremely hungry," said one woman.
This challenge is exacerbated if individuals have not developed sustainable dietary or behavioural changes during treatment.
Growing Adoption
Survey data suggest that a significant number of adults in the UK have tried weight-loss jabs in the last 12 months, with desire remaining high.
- Use is more common among women than men.
- The 40s and 50s age group shows the greatest level of interest.
- Many obtain the medications through private prescriptions rather than public health services.
Finally, clinicians emphasize that while these medications are powerful agents for shedding pounds, they are not a magic cure and lasting health benefits relies on integrated lifestyle management.
