Fresh analysis suggests that individuals who stop using popular GLP-1 drugs like semaglutide or tirzepatide may regain shed pounds far faster than those who halt conventional diet and exercise regimens.
Findings released in a leading health publication demonstrates that while overweight people often shed a large proportion of their total mass while on the medication, the mass comes back at an average rate of 0.8 kg per month after stopping.
"Users using these medications must be cognizant of the danger of quick rebound weight gain when the treatment ends," warns expert Dr. Susan Jebb.
Such speed of recovery means a return to pre-treatment weight within about one and a half years.
Weighing Treatments
The research, which examined dozens of trials involving thousands of participants, contrasted the effects of GLP-1 agonists with older methods.
Scientists note that people who lose weight through lifestyle changes alone generally see a more gradual creep back—perhaps 100 grams monthly—once they finish.
The Reason for the Rapid Regain
Nutrition scientists propose the mechanism of the drugs is key to understanding the heightened rebound.
The injections copy a natural hormone called GLP-1, which controls feelings of fullness.
"Artificially providing the hormone levels far above than normal could lead to the body to produce less of its endogenous hormone, and could reduce sensitivity to its effects," said Dr. Adam Collins, a dietetics researcher.
"Withdrawal of this GLP-1 'fix' results in appetite is uncontrolled, making excessive eating a significant risk."
A Lifelong Issue?
The NHS recommend the jabs for individuals with weight-linked medical conditions, accompanied by recommended diet and exercise modifications.
Professionals argue that, due to the significant potential of relapse, the treatment might need to be life-long.
This view is echoed by pharmaceutical companies, who say that the findings "underscore the chronic nature of excess weight," akin to managing conditions like diabetes.
User Experiences
Individuals who have discontinued the medication report a intense resurgence of hunger.
"I experienced a switch that goes on and you're instantly extremely hungry," recalled one woman.
This challenge is worsened if users have not developed sustainable lifestyle or habit modifications during therapy.
Growing Use
Recent estimates show that a significant number of people in the UK have used weight-loss jabs in the last 12 months, with desire being substantial.
- Adoption is greater among women compared to men.
- The middle-aged age group shows the greatest usage rates.
- Many access the drugs through private healthcare rather than the NHS.
In conclusion, clinicians caution that while these medications are potent agents for shedding pounds, they are not a standalone fix and long-term success hinges on combined lifestyle support.
