A recent study suggests that individuals who come off new weight-loss injections like Wegovy and Mounjaro may regain reduced body mass at a significantly accelerated pace than those who stop conventional lifestyle regimens.
Published data in a leading medical journal shows that while obese people can lose about a fifth of their total mass while on the medication, the mass returns at an estimated rate of 0.8 kg per month upon discontinuation.
"Individuals purchasing these medications should be aware of the danger of quick weight regain when the therapy concludes," warns lead investigator Dr. Susan Jebb.
That rate of regain suggests a reversion to original weight within about one and a half years.
Analyzing Treatments
The analysis, which reviewed dozens of trials involving thousands of patients, compared the results of the injectable medications with older methods.
Scientists emphasize that people who lose weight through lifestyle changes alone generally see a slower weight regain—perhaps 0.1 kg a month—once they finish.
Understanding the Fast Rebound
Nutrition scientists suggest the mechanism of the drugs explains the accelerated rebound.
These medications mimic a body's own chemical called glucagon-like peptide-1, which moderates appetite.
"Long-term administration of the hormone concentrations several times higher than the body's typical production might result in the system to generate a reduced amount of its endogenous hormone, and could diminish sensitivity to its actions," said Dr. Adam Collins, a nutrition expert.
"Discontinuation of this hormone supplement means hunger is unsuppressed, making binge eating far more likely."
A Lifelong Condition?
Health authorities advise the injections for people with obesity-related medical conditions, accompanied by prescribed lifestyle changes.
Many experts contend that, due to the high risk of relapse, the therapy might need to be life-long.
This view is echoed by pharmaceutical companies, who state that the findings "highlight the chronic nature of excess weight," comparing it to managing conditions like diabetes.
Patient Experiences
Individuals who have come off the medication report a intense resurgence of appetite.
"It was like something that goes on and you're instantly starving," said a patient.
This challenge is exacerbated if individuals have not adopted permanent lifestyle or habit changes during therapy.
Significant Use
Figures show that a significant number of adults in the UK have used these injections in the last 12 months, with desire being substantial.
- Adoption is higher among women compared to men.
- The middle-aged age group shows the highest level of interest.
- Many access the medications through private healthcare rather than the NHS.
In conclusion, researchers caution that while the jabs are effective tools for shedding pounds, they are not a permanent cure and maintained weight loss hinges on integrated behavioural support.
