A recent study suggests that patients who come off new weight-loss injections like semaglutide or tirzepatide tend to recover shed pounds at a significantly accelerated pace than those who stop traditional lifestyle regimens.
Research printed in a prominent health publication points out that while obese individuals frequently drop about a fifth of their body weight while on the medication, the mass returns at an average rate of 0.8 kg per month after stopping.
"People purchasing these drugs should be aware of the danger of fast rebound weight gain when the treatment is stopped," warns lead investigator Dr. Susan Jebb.
Such speed of regain means a return to original weight within about a year and a half.
Analyzing Approaches
The study, which looked at dozens of studies involving thousands of patients, contrasted the results of the injectable medications with older methods.
Scientists emphasize that people who lose weight through lifestyle changes alone typically experience a slower weight regain—perhaps 100 grams monthly—once they finish.
The Reason for the Fast Rebound
Doctors believe the mode of action of the injections explains the amplified rebound.
GLP-1 drugs copy a body's own chemical called GLP-1, which controls appetite.
"Artificially providing the hormone concentrations several times higher than the body's typical production may cause the system to produce less of its endogenous hormone, and may also diminish responsiveness to its effects," noted Dr. Adam Collins, a nutrition researcher.
"Withdrawal of this hormone supplement results in appetite is uncontrolled, making binge eating far more likely."
An Ongoing Condition?
The NHS recommend the injections for people with weight-linked medical conditions, accompanied by recommended diet and exercise modifications.
A number of clinicians contend that, considering the high risk of relapse, the treatment is often long-term.
This opinion is supported by pharmaceutical companies, who say that the findings "emphasize the chronic nature of obesity," similar to managing diseases like hypertension.
Patient Testimonies
Users who have discontinued the medication report a sudden return of hunger.
"I experienced a switch activating and you become extremely hungry," recalled a patient.
This difficulty is compounded if individuals have not developed permanent lifestyle or habit changes during treatment.
Growing Adoption
Recent estimates indicate that a significant number of people in the UK have tried weight-loss jabs in the past year, with interest continuing to grow.
- Adoption is greater among females compared to males.
- The 40s and 50s age group shows the highest level of interest.
- Many obtain the medications through private healthcare rather than public health services.
Finally, researchers emphasize that while these medications are powerful agents for shedding pounds, they are not a standalone fix and maintained weight loss hinges on ongoing lifestyle changes.
