Fresh analysis indicates that people who stop using new weight-loss injections like Mounjaro or Wegovy can put back on reduced body mass far faster than those who stop conventional diet and exercise regimens.
Research printed in a major health publication demonstrates that while obese people frequently drop a large proportion of their body weight while undergoing treatment, the weight comes back at an estimated rate of 0.8 kg per month once they quit.
"Individuals using such medications should be cognizant of the potential of rapid rebound weight gain when the treatment ends," warns lead investigator Dr. Susan Jebb.
Such speed of regain means a reversion to original weight within about a year and a half.
Weighing Treatments
The study, which reviewed dozens of trials involving over 9,000 of participants, compared the results of these new drugs with other pills.
Scientists note that individuals who shed pounds through lifestyle changes alone generally have a slower creep back—around 0.1 kg a month—after stopping.
Understanding the Quick Rebound
Nutrition scientists propose the mode of action of the injections is key to understanding the accelerated weight return.
These medications copy a body's own chemical called GLP-1, which controls feelings of fullness.
"Artificially providing GLP-1 levels several times higher than normal could lead to the system to generate a reduced amount of its endogenous hormone, and may also lessen responsiveness to its effects," noted Dr. Adam Collins, a nutrition researcher.
"Withdrawal of this GLP-1 'fix' leads to hunger is uncontrolled, making binge eating far more likely."
A Lifelong Issue?
Medical guidelines suggest the injections for people with weight-linked health risks, alongside prescribed lifestyle changes.
Many experts say that, given the likelihood of relapse, the therapy is often life-long.
This perspective is supported by drug manufacturers, who say that the findings "highlight the persistent character of excess weight," comparing it to managing diseases like diabetes.
Patient Accounts
Users who have come off the medication explain a sudden resurgence of hunger.
"It felt as if a trigger that goes on and I was suddenly ravenous," described a patient.
The struggle is exacerbated if patients have not developed sustainable lifestyle or habit changes during treatment.
Growing Interest
Survey data show that a significant number of people in the UK have tried these injections in the last 12 months, with interest remaining high.
- Use is higher among females compared to males.
- The 40s and 50s demographic shows the greatest usage rates.
- Many access the drugs through private prescriptions rather than public health services.
In conclusion, researchers caution that while GLP-1 drugs are effective agents for weight loss, they are not a standalone fix and maintained weight loss likely depends on combined lifestyle changes.
