Fresh analysis indicates that patients who come off new weight-loss injections like Wegovy and Mounjaro can put back on shed pounds at a significantly accelerated pace than those who stop traditional lifestyle plans.
Published data in a major health publication demonstrates that while obese individuals can lose a large proportion of their total mass while undergoing treatment, the weight comes back at an estimated rate of 0.8 kg per month after stopping.
"Individuals using these medications must be cognizant of the danger of rapid rebound weight gain when the medication is stopped," warns lead investigator Dr. Susan Jebb.
That rate of recovery suggests a reversion to pre-treatment weight in about one and a half years.
Weighing Approaches
The research, which reviewed 37 of studies involving over 9,000 of participants, contrasted the outcomes of the injectable medications with other pills.
Researchers emphasize that people who shed pounds through dieting typically have a slower creep back—approximately 0.1 kg a month—after stopping.
Explaining the Fast Rebound
Nutrition scientists suggest the mode of action of the injections explains the heightened regain.
The injections copy a natural hormone called glucagon-like peptide-1, which moderates appetite.
"Long-term administration of the hormone levels several times higher than normal may cause the system to produce less of its endogenous hormone, and may also reduce sensitivity to its actions," explained Dr. Adam Collins, a dietetics expert.
"Withdrawal of this hormone supplement means hunger is no longer kept in check, making binge eating much more probable."
An Ongoing Issue?
The NHS suggest the injections for individuals with weight-linked medical conditions, alongside recommended diet and exercise modifications.
A number of clinicians argue that, due to the high risk of weight regain, the treatment might need to be ongoing.
This opinion is echoed by pharmaceutical companies, who say that the findings "highlight the persistent character of excess weight," akin to managing diseases like high blood pressure.
Patient Experiences
People who have stopped the medication report a sudden resurgence of cravings.
"I experienced something flipping and you're instantly starving," recalled a patient.
This difficulty is compounded if individuals have not established permanent dietary or behavioural modifications during treatment.
Widespread Interest
Survey data show that a significant number of people in the UK have tried weight-loss jabs in the past year, with interest continuing to grow.
- Use is more common among women compared to males.
- The middle-aged age group shows the greatest usage rates.
- Many access the medications through private healthcare rather than public health services.
Ultimately, researchers stress that while these medications are potent tools for weight loss, they are not a permanent fix and lasting health benefits likely depends on integrated lifestyle support.
