Fresh analysis indicates that people who come off blockbuster GLP-1 drugs like semaglutide or tirzepatide can put back on lost weight at a significantly accelerated pace than those who halt traditional diet and exercise plans.
Research printed in a major medical journal demonstrates that while overweight individuals frequently drop a large proportion of their body weight while undergoing treatment, the weight is regained at an estimated rate of 0.8 kg per month after stopping.
"People using these drugs need to be informed of the danger of fast rebound weight gain when the treatment concludes," warns researcher Dr. Susan Jebb.
This pace of regain implies a return to original mass in about a year and a half.
Comparing Approaches
The study, which reviewed 37 of studies involving over 9,000 of patients, compared the results of GLP-1 agonists with conventional dieting.
Researchers note that people who shed pounds through diet and exercise typically have a more gradual creep back—around 0.1 kg a month—after stopping.
Understanding the Quick Regain
Nutrition scientists propose the way of the injections is key to understanding the amplified regain.
GLP-1 drugs mimic a natural hormone called glucagon-like peptide-1, which moderates feelings of fullness.
"Sustained high doses of the hormone concentrations far above than normal could lead to the body to generate a reduced amount of its own natural hormone, and could reduce responsiveness to its effects," noted Dr. Adam Collins, a dietetics researcher.
"Stopping of this hormone supplement results in hunger is no longer kept in check, making binge eating a significant risk."
An Ongoing Condition?
Health authorities recommend the injections for people with obesity-related health risks, accompanied by recommended diet and exercise modifications.
Professionals contend that, given the high risk of relapse, the therapy is often life-long.
This perspective is supported by pharmaceutical companies, who note that the results "highlight the chronic character of obesity," similar to managing diseases like hypertension.
User Experiences
People who have come off the medication explain a sudden return of hunger.
"It felt as if a switch activating and you're instantly extremely hungry," described a patient.
The struggle is compounded if individuals have not established permanent dietary or behavioural modifications during treatment.
Growing Adoption
Recent estimates indicate that a significant number of adults in the UK have tried these injections in the past year, with demand remaining high.
- Adoption is more common among women compared to males.
- The middle-aged age group shows the greatest level of interest.
- A large proportion access the drugs through private prescriptions rather than public health services.
Ultimately, clinicians emphasize that while these medications are effective tools for shedding pounds, they are not a magic cure and long-term success relies on integrated lifestyle management.
