New research suggests that people who discontinue new GLP-1 drugs like semaglutide or tirzepatide can put back on shed pounds far faster than those who end conventional diet and exercise regimens.
Findings released in a major health publication demonstrates that while obese people frequently drop about a fifth of their total mass while undergoing treatment, the mass returns at an estimated rate of 0.8 kg per month upon discontinuation.
"Users buying such treatments should be informed of the danger of quick rebound weight gain when the medication is stopped," stated expert Dr. Susan Jebb.
This pace of regain means a return to original mass in about 18 months.
Analyzing Approaches
The study, which examined 37 of studies involving over 9,000 of patients, contrasted the results of these new drugs with older methods.
Researchers emphasize that people who lose weight through lifestyle changes alone generally experience a less rapid creep back—around 0.1 kg a month—once they finish.
Explaining the Quick Rebound
Experts suggest the mode of action of the injections explains the accelerated regain.
The injections imitate a body's own chemical called GLP-1, which controls appetite.
"Long-term administration of GLP-1 levels several times higher than the body's typical production may cause the body to produce less of its endogenous GLP-1, and could reduce sensitivity to its effects," said Dr. Adam Collins, a nutrition expert.
"Withdrawal of this medication leads to appetite is unsuppressed, making excessive eating much more probable."
A Chronic Issue?
Medical guidelines recommend the injections for people with weight-linked medical conditions, alongside prescribed diet and exercise modifications.
A number of clinicians say that, considering the significant potential of weight regain, the therapy might need to be ongoing.
This opinion is echoed by drug manufacturers, who note that the findings "highlight the persistent character of excess weight," comparing it to managing conditions like diabetes.
Patient Accounts
Users who have come off the medication describe a powerful resurgence of appetite.
"It was like a switch activating and you're instantly starving," said one woman.
This challenge is exacerbated if users have not developed lasting lifestyle or habit changes during treatment.
Significant Use
Recent estimates show that millions of people in the UK have used these injections in the past year, with interest being substantial.
- Adoption is more common among women compared to men.
- The 40s and 50s age group shows the greatest usage rates.
- Many obtain the medications through private healthcare rather than the NHS.
Finally, researchers caution that while these medications are effective agents for shedding pounds, they are not a magic solution and lasting health benefits relies on combined lifestyle management.
