Fresh analysis suggests that patients who come off blockbuster slimming jabs like semaglutide or tirzepatide tend to recover lost weight at a significantly accelerated pace than those who end traditional diet and exercise plans.
Published data in a prominent medical journal points out that while obese individuals can lose substantial amounts of their body weight while on the medication, the mass is regained at an estimated rate of 0.8 kg per month upon discontinuation.
"Users using these drugs must be aware of the danger of rapid rebound weight gain when the treatment concludes," warns researcher Dr. Susan Jebb.
That rate of recovery suggests a return to original weight in about a year and a half.
Analyzing Treatments
The research, which looked at 37 of trials involving over 9,000 of participants, contrasted the effects of these new drugs with older methods.
The team point out that individuals who lose weight through diet and exercise usually see a less rapid weight regain—around 100 grams monthly—post-intervention.
Understanding the Rapid Rebound
Experts propose the way of the jabs is key to understanding the accelerated weight return.
The injections copy a natural hormone called GLP-1, which controls appetite.
"Sustained high doses of the hormone concentrations far above than the body's typical production may cause the system to produce less of its endogenous GLP-1, and may also reduce responsiveness to its effects," said Dr. Adam Collins, a dietetics researcher.
"Discontinuation of this GLP-1 'fix' leads to appetite is no longer kept in check, making binge eating far more likely."
A Chronic Condition?
The NHS recommend the injections for people with obesity-related medical conditions, alongside recommended diet and exercise modifications.
Many experts say that, due to the significant potential of weight regain, the therapy is often long-term.
This view is echoed by pharmaceutical companies, who state that the findings "underscore the persistent character of excess weight," similar to managing conditions like diabetes.
User Accounts
People who have discontinued the medication describe a powerful resurgence of hunger.
"It was like a trigger activating and you're instantly extremely hungry," recalled a patient.
This challenge is worsened if patients have not established sustainable dietary or behavioural modifications during treatment.
Growing Adoption
Figures indicate that a significant number of people in the UK have used weight-loss jabs in the past year, with desire being substantial.
- Adoption is higher among females compared to men.
- The 40s and 50s demographic shows the highest level of interest.
- Many obtain the drugs through private prescriptions rather than the NHS.
Finally, researchers caution that while these medications are powerful agents for weight loss, they are not a standalone solution and maintained weight loss hinges on integrated behavioural management.