A recent study suggests that people who stop using blockbuster weight-loss injections like semaglutide or tirzepatide may regain shed pounds much more quickly than those who stop conventional lifestyle regimens.
Research printed in a major medical journal shows that while overweight individuals often shed substantial amounts of their body weight while using the jabs, the weight comes back at an average rate of 0.8 kg per month upon discontinuation.
"Individuals buying such medications need to be cognizant of the potential of fast weight regain when the therapy ends," cautioned lead investigator Dr. Susan Jebb.
This pace of recovery suggests a reversion to original mass in about one and a half years.
Weighing Approaches
The study, which reviewed 37 of studies involving thousands of participants, contrasted the effects of these new drugs with other pills.
Scientists note that individuals who shed pounds through lifestyle changes alone typically have a less rapid creep back—around 0.1 kg a month—post-intervention.
Explaining the Fast Rebound
Nutrition scientists suggest the mode of action of the injections explains the accelerated regain.
The injections mimic a natural hormone called GLP-1, which moderates hunger.
"Artificially providing GLP-1 concentrations several times higher than normal could lead to the body to generate a reduced amount of its own natural hormone, and may also diminish sensitivity to its effects," said Dr. Adam Collins, a nutrition researcher.
"Withdrawal of this medication means appetite is no longer kept in check, making binge eating a significant risk."
An Ongoing Condition?
Health authorities advise the jabs for people with obesity-related medical conditions, alongside prescribed diet and exercise modifications.
A number of clinicians contend that, due to the significant potential of relapse, the therapy might need to be life-long.
This view is echoed by pharmaceutical companies, who say that the findings "emphasize the chronic nature of obesity," comparing it to managing conditions like hypertension.
User Accounts
Individuals who have stopped the medication report a powerful resurgence of appetite.
"It felt as if a switch flipping and you're instantly starving," said an individual.
The struggle is worsened if patients have not established sustainable dietary or behavioural changes during therapy.
Growing Adoption
Survey data suggest that millions of adults in the UK have tried weight-loss jabs in the past year, with interest being substantial.
- Use is higher among females than men.
- The 40s and 50s demographic shows the greatest usage rates.
- A large proportion access the drugs through private prescriptions rather than the NHS.
Ultimately, clinicians stress that while the jabs are potent agents for weight loss, they are not a permanent fix and long-term success hinges on combined behavioural support.
