New research indicates that people who come off blockbuster slimming jabs like semaglutide or tirzepatide may regain lost weight much more quickly than those who halt traditional diet and exercise plans.
Research printed in a prominent health publication points out that while obese individuals can lose substantial amounts of their total mass while undergoing treatment, the mass comes back at an average rate of nearly a kilo each month after stopping.
"People purchasing such drugs must be aware of the danger of rapid rebound weight gain when the medication is stopped," cautioned researcher Dr. Susan Jebb.
That rate of regain suggests a reversion to pre-treatment mass within about 18 months.
Analyzing Therapies
The study, which looked at dozens of studies involving thousands of patients, contrasted the effects of these new drugs with conventional dieting.
Scientists emphasize that individuals who lose weight through diet and exercise usually experience a slower weight regain—approximately 100 grams monthly—once they finish.
The Reason for the Quick Regain
Nutrition scientists believe the way of the jabs is key to understanding the amplified weight return.
The injections mimic a natural hormone called glucagon-like peptide-1, which moderates appetite.
"Long-term administration of GLP-1 concentrations several times higher than the body's typical production could lead to the system to generate a reduced amount of its own natural hormone, and may also diminish responsiveness to its effects," explained Dr. Adam Collins, a dietetics expert.
"Stopping of this GLP-1 'fix' results in hunger is unsuppressed, making excessive eating far more likely."
An Ongoing Issue?
The NHS recommend the jabs for people with obesity-related health risks, alongside prescribed lifestyle changes.
A number of clinicians say that, due to the high risk of weight regain, the therapy is often ongoing.
This opinion is reinforced by pharmaceutical companies, who note that the results "underscore the long-term nature of excess weight," comparing it to managing conditions like diabetes.
Patient Experiences
Individuals who have discontinued the medication report a sudden return of cravings.
"It was like something flipping and you become ravenous," described one woman.
This difficulty is exacerbated if individuals have not established sustainable lifestyle or habit changes during treatment.
Widespread Adoption
Recent estimates suggest that a significant number of adults in the UK have tried weight-loss jabs in the past year, with desire being substantial.
- Use is higher among females compared to men.
- The 40s and 50s demographic shows the greatest level of interest.
- Many obtain the medications through private prescriptions rather than the NHS.
Finally, experts emphasize that while GLP-1 drugs are effective tools for shedding pounds, they are not a permanent cure and long-term success relies on integrated lifestyle changes.
