New research suggests that patients who discontinue new weight-loss injections like Wegovy and Mounjaro can put back on lost weight far faster than those who end traditional lifestyle plans.
Published data in a leading medical journal points out that while obese people can lose a large proportion of their total mass while undergoing treatment, the mass returns at an estimated rate of 0.8 kg per month upon discontinuation.
"People using such treatments should be informed of the risk of fast rebound weight gain when the therapy is stopped," warns researcher Dr. Susan Jebb.
This pace of regain suggests a return to original mass in about a year and a half.
Weighing Approaches
The study, which examined dozens of studies involving over 9,000 of participants, compared the results of the injectable medications with older methods.
Researchers emphasize that people who shed pounds through lifestyle changes alone usually have a slower creep back—perhaps 100 grams monthly—after stopping.
Understanding the Rapid Regain
Nutrition scientists believe the mechanism of the jabs is key to understanding the amplified regain.
The injections mimic a body's own chemical called GLP-1, which controls hunger.
"Artificially providing the hormone concentrations far above than the body's typical production may cause the body to generate a reduced amount of its own natural hormone, and may also lessen sensitivity to its effects," noted Dr. Adam Collins, a dietetics researcher.
"Stopping of this medication means hunger is uncontrolled, making overeating much more probable."
A Lifelong Condition?
Health authorities advise the jabs for individuals with obesity-related medical conditions, accompanied by prescribed diet and exercise modifications.
Many experts contend that, considering the likelihood of weight regain, the therapy should be considered long-term.
This perspective is reinforced by pharmaceutical companies, who state that the findings "underscore the long-term nature of obesity," comparing it to managing conditions like diabetes.
Patient Accounts
Individuals who have discontinued the jabs explain a intense return of hunger.
"It felt as if a trigger that goes on and you're instantly extremely hungry," described one woman.
This difficulty is exacerbated if users have not developed permanent dietary or behavioural changes during therapy.
Widespread Adoption
Figures suggest that millions of people in the UK have used weight-loss jabs in the last 12 months, with demand remaining high.
- Adoption is more common among women than males.
- The 40s and 50s age group shows the highest level of interest.
- Many access the medications through private prescriptions rather than public health services.
Finally, experts stress that while the jabs are powerful agents for shedding pounds, they are not a magic solution and long-term success hinges on integrated lifestyle management.
