New research indicates that people who stop using popular GLP-1 drugs like Wegovy and Mounjaro tend to recover reduced body mass far faster than those who halt traditional lifestyle plans.
Findings released in a major health publication demonstrates that while obese individuals often shed 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 drugs need to be aware of the danger of quick rebound weight gain when the treatment ends," warns expert Dr. Susan Jebb.
That rate of recovery implies a return to original mass in about a year and a half.
Analyzing Treatments
The research, which examined dozens of trials involving thousands of patients, compared the outcomes of these new drugs with other pills.
Scientists point out that individuals who shed pounds through lifestyle changes alone typically see a less rapid creep back—perhaps 0.1 kg a month—once they finish.
Understanding the Rapid Regain
Nutrition scientists believe the mode of action of the injections explains the heightened rebound.
These medications imitate a body's own chemical called GLP-1, which helps regulate appetite.
"Long-term administration of the hormone concentrations several times higher than normal might result in the system to produce less of its own natural hormone, and could reduce responsiveness to its effects," said Dr. Adam Collins, a dietetics specialist.
"Withdrawal of this medication results in hunger is uncontrolled, making binge eating a significant risk."
A Lifelong Issue?
Health authorities recommend the injections for people with weight-linked health risks, alongside recommended lifestyle changes.
Many experts argue that, due to the significant potential of weight regain, the treatment is often life-long.
This perspective is reinforced by drug manufacturers, who state that the results "highlight the chronic character of obesity," comparing it to managing conditions like diabetes.
Patient Experiences
People who have stopped the medication report a sudden resurgence of appetite.
"It felt as if something flipping and I was suddenly ravenous," recalled an individual.
The struggle is compounded if users have not adopted permanent dietary or behavioural modifications during treatment.
Widespread Interest
Survey data indicate that millions of people in the UK have used these injections in the last 12 months, with desire remaining high.
- Use is more common among females compared to men.
- The middle-aged age group shows the highest level of interest.
- Many obtain the drugs through private prescriptions rather than the NHS.
Finally, experts caution that while these medications are potent tools for shedding pounds, they are not a permanent fix and long-term success hinges on ongoing behavioural support.
