New research reveals that individuals who stop using blockbuster GLP-1 drugs like semaglutide or tirzepatide can put back on lost weight far faster than those who end conventional diet and exercise regimens.
Research printed in a prominent medical journal shows that while obese individuals can lose a large proportion of their total mass while undergoing treatment, the mass comes back at an estimated rate of nearly a kilo each month once they quit.
"Individuals purchasing such medications should be aware of the danger of rapid weight regain when the medication concludes," warns expert Dr. Susan Jebb.
This pace of regain suggests a reversion to starting weight within about 18 months.
Analyzing Approaches
The analysis, which reviewed dozens of trials involving thousands of participants, contrasted the effects of these new drugs with conventional dieting.
Scientists note that individuals who lose weight through diet and exercise generally have a less rapid creep back—perhaps 0.1 kg a month—once they finish.
The Reason for the Rapid Rebound
Nutrition scientists believe the mechanism of the jabs explains the accelerated rebound.
The injections imitate a body's own chemical called GLP-1, which controls appetite.
"Sustained high doses of the hormone concentrations several times higher than normal might result in the system to produce less of its own natural hormone, and may also lessen responsiveness to its actions," explained Dr. Adam Collins, a dietetics researcher.
"Withdrawal of this GLP-1 'fix' means appetite is no longer kept in check, making overeating a significant risk."
An Ongoing Condition?
Health authorities advise the injections for individuals with obesity-related medical conditions, alongside recommended lifestyle changes.
A number of clinicians contend that, considering the high risk of weight regain, the treatment should be considered life-long.
This perspective is reinforced by drug manufacturers, who note that the findings "emphasize the chronic character of excess weight," similar to managing diseases like diabetes.
User Accounts
People who have discontinued the medication explain a sudden return of cravings.
"It was like a switch flipping and I was suddenly extremely hungry," recalled a patient.
This challenge is exacerbated if individuals have not established permanent dietary or behavioural modifications during treatment.
Growing Interest
Recent estimates indicate that millions of adults in the UK have tried these injections in the last 12 months, with demand being substantial.
- Use is greater among women than males.
- The 40s and 50s demographic shows the greatest usage rates.
- Many obtain the drugs through private prescriptions rather than the NHS.
Ultimately, experts caution that while these medications are potent tools for shedding pounds, they are not a permanent fix and lasting health benefits relies on integrated lifestyle management.
