A recent study reveals that individuals who discontinue popular GLP-1 drugs like semaglutide or tirzepatide may regain lost weight far faster than those who stop conventional lifestyle plans.
Research printed in a leading medical journal demonstrates that while obese individuals frequently drop a large proportion of their body weight while using the jabs, the weight is regained at an estimated rate of nearly a kilo each month once they quit.
"People using these treatments need to be informed of the potential of fast rebound weight gain when the treatment is stopped," stated lead investigator Dr. Susan Jebb.
That rate of regain means a reversion to starting mass in about a year and a half.
Comparing Approaches
The research, which examined dozens of studies involving over 9,000 of participants, contrasted the results of these new drugs with older methods.
Researchers note that people who shed pounds through lifestyle changes alone usually have a less rapid weight regain—approximately 0.1 kg a month—post-intervention.
The Reason for the Rapid Regain
Experts suggest the mode of action of the drugs is key to understanding the amplified rebound.
The injections mimic a body's own chemical called GLP-1, which moderates feelings of fullness.
"Artificially providing the hormone levels several times higher than the body's typical production may cause the system to produce less of its own natural hormone, and could lessen sensitivity to its effects," said Dr. Adam Collins, a nutrition researcher.
"Stopping of this GLP-1 'fix' leads to hunger is uncontrolled, making overeating far more likely."
An Ongoing Issue?
Health authorities recommend the injections for individuals with obesity-related medical conditions, alongside recommended diet and exercise modifications.
Professionals contend that, given the significant potential of weight regain, the treatment should be considered ongoing.
This perspective is reinforced by pharmaceutical companies, who note that the findings "underscore the persistent nature of excess weight," comparing it to managing conditions like hypertension.
User Experiences
People who have discontinued the medication describe a sudden return of cravings.
"I experienced something flipping and you become starving," described a patient.
This challenge is compounded if patients have not established lasting lifestyle or habit changes during treatment.
Widespread Interest
Survey data show that millions of people in the UK have used weight-loss jabs in the past year, with interest continuing to grow.
- Use is greater among females 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 the NHS.
Ultimately, experts emphasize that while these medications are effective agents for shedding pounds, they are not a permanent solution and lasting health benefits relies on integrated behavioural support.
