A recent study indicates that patients who come off blockbuster slimming jabs like Wegovy and Mounjaro may regain reduced body mass far faster than those who halt conventional diet and exercise programs.
Published data in a major health publication shows that while overweight people often shed substantial amounts of their body weight while using the jabs, the mass is regained at an average rate of 0.8 kg per month once they quit.
"Users buying these drugs need to be informed of the danger of fast weight regain when the therapy ends," stated lead investigator Dr. Susan Jebb.
Such speed of regain means a return to starting weight within about 18 months.
Weighing Treatments
The research, which reviewed dozens of trials involving thousands of patients, contrasted the outcomes of these new drugs with other pills.
The team emphasize that individuals who shed pounds through lifestyle changes alone generally have a more gradual weight regain—approximately 100 grams monthly—once they finish.
Explaining the Fast Regain
Experts believe the mode of action of the jabs explains the accelerated rebound.
These medications 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 could lead to the body to generate a reduced amount of its endogenous GLP-1, and could lessen sensitivity to its effects," noted Dr. Adam Collins, a nutrition researcher.
"Discontinuation of this hormone supplement leads to appetite is unsuppressed, making binge eating much more probable."
A Chronic Condition?
The NHS recommend the injections for people with weight-linked health risks, accompanied by recommended lifestyle changes.
A number of clinicians argue that, given the significant potential of relapse, the therapy might need to be long-term.
This perspective is reinforced by pharmaceutical companies, who state that the findings "emphasize the persistent nature of obesity," similar to managing conditions like high blood pressure.
Patient Accounts
People who have stopped the medication describe a intense return of hunger.
"It was like a trigger activating and you're instantly extremely hungry," said one woman.
This difficulty is exacerbated if patients have not adopted lasting dietary or behavioural changes during therapy.
Growing Use
Recent estimates suggest that millions of adults in the UK have used these injections in the last 12 months, with demand being substantial.
- Use is higher among females than men.
- The 40s and 50s demographic shows the highest level of interest.
- Many access the drugs through private prescriptions rather than the NHS.
Ultimately, clinicians emphasize that while these medications are powerful tools for weight loss, they are not a magic fix and maintained weight loss relies on ongoing lifestyle support.
