A recent study suggests that patients who come off popular GLP-1 drugs like semaglutide or tirzepatide may regain lost weight at a significantly accelerated pace than those who end conventional lifestyle regimens.
Published data in a leading medical journal demonstrates that while overweight individuals can lose substantial amounts of their total mass while using the jabs, the weight is regained at an average rate of nearly a kilo each month once they quit.
"Users purchasing these drugs must be aware of the risk of quick rebound weight gain when the treatment is stopped," warns lead investigator Dr. Susan Jebb.
Such speed of recovery means a reversion to pre-treatment mass in about a year and a half.
Weighing Therapies
The analysis, which looked at 37 of trials involving thousands of participants, contrasted the effects of the injectable medications with other pills.
The team note that people who lose weight through lifestyle changes alone generally experience a less rapid creep back—perhaps 0.1 kg a month—post-intervention.
Understanding the Rapid Regain
Experts propose the mechanism of the drugs is key to understanding the amplified weight return.
The injections imitate a body's own chemical called glucagon-like peptide-1, which helps regulate hunger.
"Sustained high doses of GLP-1 concentrations several times higher than normal may cause the body to produce less of its own natural GLP-1, and may also reduce sensitivity to its actions," explained Dr. Adam Collins, a dietetics specialist.
"Discontinuation of this hormone supplement results in appetite is no longer kept in check, making binge eating a significant risk."
An Ongoing Disease?
Health authorities suggest the jabs for individuals with obesity-related health risks, accompanied by prescribed diet and exercise modifications.
Many experts say that, considering the significant potential of relapse, the treatment should be considered ongoing.
This opinion is echoed by pharmaceutical companies, who state that the results "emphasize the chronic nature of obesity," similar to managing diseases like diabetes.
User Accounts
Individuals who have come off the jabs report a sudden resurgence of hunger.
"It was like a trigger flipping and I was suddenly ravenous," described a patient.
This difficulty is worsened if users have not adopted permanent dietary or behavioural changes during therapy.
Significant Adoption
Figures indicate that a significant number of people in the UK have used weight-loss jabs in the past year, with demand being substantial.
- Adoption is higher among females compared to men.
- The middle-aged demographic shows the highest usage rates.
- A large proportion access the drugs through private prescriptions rather than the NHS.
Ultimately, experts stress that while the jabs are effective tools for shedding pounds, they are not a permanent fix and long-term success relies on combined lifestyle support.
