New research reveals that people who discontinue blockbuster GLP-1 drugs like semaglutide or tirzepatide tend to recover lost weight far faster than those who stop conventional diet and exercise regimens.
Research printed in a major health publication demonstrates that while obese individuals frequently drop about a fifth of their total mass while undergoing treatment, the mass returns at an average rate of nearly a kilo each month after stopping.
"Individuals using these treatments should be aware of the potential of quick rebound weight gain when the medication ends," warns researcher Dr. Susan Jebb.
This pace of recovery means a return to starting weight in about 18 months.
Weighing Treatments
The research, which looked at 37 of studies involving thousands of patients, compared the results of these new drugs with other pills.
The team note that individuals who shed pounds through lifestyle changes alone generally see a less rapid weight regain—around 100 grams monthly—once they finish.
Explaining the Rapid Rebound
Doctors believe the mechanism of the drugs explains the amplified weight return.
GLP-1 drugs mimic a body's own chemical called glucagon-like peptide-1, which moderates appetite.
"Sustained high doses of GLP-1 concentrations far above than the body's typical production may cause the system to produce less of its own natural hormone, and could diminish responsiveness to its actions," explained Dr. Adam Collins, a nutrition researcher.
"Stopping of this hormone supplement leads to appetite is uncontrolled, making binge eating far more likely."
An Ongoing Disease?
Medical guidelines suggest the jabs for people with weight-linked medical conditions, alongside prescribed diet and exercise modifications.
A number of clinicians contend that, given the likelihood of weight regain, the treatment should be considered ongoing.
This perspective is echoed by pharmaceutical companies, who say that the findings "highlight the long-term character of excess weight," akin to managing conditions like diabetes.
Patient Experiences
People who have come off the medication explain a powerful resurgence of appetite.
"I experienced a trigger activating and you become extremely hungry," described a patient.
This challenge is worsened if users have not adopted permanent dietary or behavioural changes during treatment.
Growing Use
Survey data show that millions of adults in the UK have used weight-loss jabs in the past year, with interest remaining high.
- Use is higher among females than men.
- The middle-aged age group shows the greatest level of interest.
- Many access the drugs through private prescriptions rather than the NHS.
In conclusion, experts caution that while the jabs are potent tools for shedding pounds, they are not a permanent solution and maintained weight loss relies on combined lifestyle support.
