New research indicates that people who discontinue blockbuster weight-loss injections like Mounjaro or Wegovy may regain lost weight far faster than those who halt traditional diet and exercise plans.
Research printed in a prominent health publication demonstrates that while overweight people can lose a large proportion of their body weight while using the jabs, the weight comes back at an estimated rate of nearly a kilo each month once they quit.
"Users using these treatments need to be informed of the potential of rapid rebound weight gain when the therapy is stopped," cautioned expert Dr. Susan Jebb.
That rate of recovery means a return to starting mass in about a year and a half.
Comparing Approaches
The research, which reviewed dozens of trials involving over 9,000 of patients, contrasted the results of GLP-1 agonists with other pills.
Researchers emphasize that individuals who lose weight through diet and exercise generally experience a slower creep back—perhaps 0.1 kg a month—post-intervention.
Understanding the Rapid Rebound
Doctors suggest the way of the jabs explains the amplified weight return.
GLP-1 drugs copy a natural hormone called glucagon-like peptide-1, which controls hunger.
"Artificially providing GLP-1 levels far above than normal might result in the body to produce less of its own natural hormone, and could reduce sensitivity to its actions," said Dr. Adam Collins, a dietetics researcher.
"Withdrawal of this GLP-1 'fix' leads to hunger is unsuppressed, making overeating a significant risk."
A Chronic Disease?
Medical guidelines recommend the jabs for people with obesity-related medical conditions, accompanied by prescribed diet and exercise modifications.
A number of clinicians argue that, given the likelihood of relapse, the treatment is often long-term.
This view is reinforced by pharmaceutical companies, who say that the findings "underscore the chronic nature of obesity," similar to managing conditions like high blood pressure.
User Experiences
Users who have discontinued the medication describe a sudden return of hunger.
"It felt as if a trigger flipping and you're instantly starving," said an individual.
This challenge is exacerbated if users have not adopted lasting dietary or behavioural modifications during treatment.
Growing Use
Survey data indicate that millions of people in the UK have tried these injections in the past year, with desire continuing to grow.
- Adoption is more common among females than men.
- The middle-aged age group shows the highest usage rates.
- A large proportion access the drugs through private healthcare rather than the NHS.
Ultimately, experts caution that while the jabs are potent tools for weight loss, they are not a magic cure and long-term success likely depends on ongoing behavioural changes.
