New research indicates that individuals who stop using blockbuster GLP-1 drugs like semaglutide or tirzepatide tend to recover lost weight at a significantly accelerated pace than those who stop conventional diet and exercise regimens.
Published data in a prominent health publication points out that while overweight individuals can lose a large proportion of their total mass while undergoing treatment, the mass comes back at an average rate of 0.8 kg per month upon discontinuation.
"Users using such drugs need to be aware of the danger of rapid weight regain when the medication concludes," stated lead investigator Dr. Susan Jebb.
That rate of recovery implies a return to starting mass within about a year and a half.
Weighing Treatments
The analysis, which reviewed 37 of studies involving over 9,000 of patients, compared the effects of these new drugs with other pills.
The team point out that individuals who lose weight through lifestyle changes alone typically see a more gradual weight regain—approximately 100 grams monthly—post-intervention.
The Reason for the Quick Rebound
Nutrition scientists propose the mechanism of the injections explains the accelerated regain.
GLP-1 drugs copy a body's own chemical called glucagon-like peptide-1, which moderates feelings of fullness.
"Artificially providing GLP-1 levels far above than normal might result in the system to generate a reduced amount of its own natural GLP-1, and may also lessen responsiveness to its effects," said Dr. Adam Collins, a nutrition researcher.
"Stopping of this GLP-1 'fix' means appetite is uncontrolled, making overeating much more probable."
A Lifelong Disease?
Health authorities recommend the injections for individuals with obesity-related health risks, accompanied by recommended lifestyle changes.
Many experts contend that, due to the high risk of relapse, the therapy might need to be life-long.
This view is reinforced by pharmaceutical companies, who state that the results "emphasize the persistent nature of excess weight," akin to managing conditions like hypertension.
Patient Testimonies
People who have stopped the jabs explain a sudden return of appetite.
"It felt as if something activating and you become starving," said a patient.
The struggle is compounded if patients have not adopted sustainable lifestyle or habit changes during therapy.
Growing Use
Recent estimates suggest that a significant number of adults in the UK have tried these injections in the past year, with desire continuing to grow.
- Adoption is more common among women compared to men.
- The 40s and 50s demographic shows the greatest usage rates.
- Many obtain the medications through private prescriptions rather than the NHS.
Finally, clinicians emphasize that while these medications are effective agents for shedding pounds, they are not a standalone cure and maintained weight loss relies on ongoing lifestyle management.
