Fresh analysis suggests that individuals who discontinue popular weight-loss injections like Mounjaro or Wegovy may regain reduced body mass at a significantly accelerated pace than those who stop conventional lifestyle plans.
Findings released in a major medical journal demonstrates that while obese individuals frequently drop substantial amounts of their body weight while using the jabs, the weight returns at an estimated rate of 0.8 kg per month once they quit.
"Individuals using these treatments need to be informed of the risk of fast weight regain when the therapy is stopped," cautioned lead investigator Dr. Susan Jebb.
This pace of recovery implies a return to original mass in about one and a half years.
Comparing Treatments
The research, which looked at dozens of trials involving over 9,000 of participants, compared the effects of GLP-1 agonists with conventional dieting.
The team note that individuals who lose weight through lifestyle changes alone usually see a slower creep back—perhaps 0.1 kg a month—after stopping.
The Reason for the Quick Regain
Doctors suggest the way of the injections explains the heightened regain.
The injections copy a body's own chemical called GLP-1, which controls hunger.
"Artificially providing the hormone concentrations several times higher than the body's typical production may cause the system to generate a reduced amount of its own natural GLP-1, and may also diminish responsiveness to its effects," noted Dr. Adam Collins, a nutrition researcher.
"Discontinuation of this GLP-1 'fix' means appetite is uncontrolled, making excessive eating a significant risk."
A Chronic Condition?
Health authorities suggest the injections for people with weight-linked health risks, alongside prescribed lifestyle changes.
A number of clinicians say that, given the likelihood of relapse, the therapy should be considered long-term.
This perspective is echoed by drug manufacturers, who state that the findings "emphasize the persistent character of obesity," similar to managing diseases like high blood pressure.
Patient Testimonies
Users who have come off the medication report a intense resurgence of hunger.
"I experienced something activating and you're instantly ravenous," said a patient.
This difficulty is compounded if users have not established lasting dietary or behavioural modifications during therapy.
Growing Adoption
Survey data suggest that millions of people in the UK have tried these injections in the last 12 months, with demand remaining high.
- Adoption is higher among women than men.
- The 40s and 50s demographic shows the highest usage rates.
- A large proportion obtain the drugs through private healthcare rather than public health services.
Ultimately, researchers stress that while these medications are potent agents for shedding pounds, they are not a magic fix and long-term success hinges on combined lifestyle support.