New research suggests that people who stop using blockbuster slimming jabs like Wegovy and Mounjaro may regain reduced body mass at a significantly accelerated pace than those who stop conventional diet and exercise programs.
Published data in a leading medical journal points out that while obese people can lose substantial amounts of their total mass while using the jabs, the weight is regained at an estimated rate of nearly a kilo each month upon discontinuation.
"Users purchasing such medications should be aware of the danger of rapid rebound weight gain when the treatment ends," cautioned researcher Dr. Susan Jebb.
This pace of recovery means a return to starting weight in about a year and a half.
Comparing Approaches
The study, which reviewed dozens of studies involving thousands of patients, compared the outcomes of these new drugs with other pills.
Scientists point out that people who shed pounds through diet and exercise usually experience a more gradual creep back—perhaps 100 grams monthly—after stopping.
The Reason for the Fast Regain
Nutrition scientists believe the mechanism of the jabs accounts for the heightened rebound.
These medications copy a body's own chemical called glucagon-like peptide-1, which controls feelings of fullness.
"Artificially providing GLP-1 levels several times higher than the body's typical production could lead to the system to generate a reduced amount of its endogenous hormone, and could reduce sensitivity to its effects," said Dr. Adam Collins, a nutrition expert.
"Withdrawal of this medication means hunger is uncontrolled, making overeating a significant risk."
A Chronic Condition?
The NHS advise the jabs for people with obesity-related health risks, accompanied by prescribed lifestyle changes.
Professionals contend that, given the likelihood of relapse, the therapy is often ongoing.
This view is reinforced by pharmaceutical companies, who say that the findings "underscore the long-term nature of excess weight," comparing it to managing diseases like high blood pressure.
Patient Testimonies
Individuals who have stopped the medication explain a powerful resurgence of appetite.
"It felt as if a trigger flipping and you become extremely hungry," recalled a patient.
This challenge is compounded if patients have not adopted permanent lifestyle or habit modifications during therapy.
Significant Interest
Survey data suggest that millions of people in the UK have used weight-loss jabs in the last 12 months, with demand continuing to grow.
- Adoption is higher among women compared to males.
- The 40s and 50s demographic shows the greatest usage rates.
- Many access the drugs through private healthcare rather than public health services.
Finally, clinicians caution that while these medications are powerful agents for shedding pounds, they are not a magic fix and lasting health benefits hinges on combined lifestyle changes.
