Fresh analysis suggests that people who discontinue blockbuster weight-loss injections like Wegovy and Mounjaro may regain lost weight at a significantly accelerated pace than those who halt traditional lifestyle regimens.
Research printed in a leading health publication points out that while obese people often shed a large proportion of their body weight while undergoing treatment, the weight returns at an estimated rate of nearly a kilo each month after stopping.
"Users using these medications should be aware of the potential of rapid weight regain when the therapy is stopped," warns expert Dr. Susan Jebb.
That rate of regain suggests a return to starting weight in about a year and a half.
Analyzing Treatments
The study, which examined dozens of trials involving thousands of patients, contrasted the outcomes of GLP-1 agonists with other pills.
Researchers note that individuals who shed pounds through dieting usually have a more gradual weight regain—around 100 grams monthly—after stopping.
Explaining the Rapid Regain
Doctors propose the way of the injections explains the heightened regain.
These medications imitate a natural hormone called glucagon-like peptide-1, which controls appetite.
"Artificially providing the hormone concentrations far above than the body's typical production may cause the system to generate a reduced amount of its own natural hormone, and may also reduce responsiveness to its actions," explained Dr. Adam Collins, a nutrition specialist.
"Discontinuation of this medication means hunger is uncontrolled, making overeating a significant risk."
A Chronic Issue?
The NHS recommend the jabs for individuals with obesity-related medical conditions, accompanied by prescribed lifestyle changes.
A number of clinicians argue that, due to the high risk of weight regain, the therapy might need to be long-term.
This perspective is reinforced by drug manufacturers, who note that the results "emphasize the long-term character of excess weight," akin to managing conditions like hypertension.
Patient Testimonies
Users who have discontinued the medication report a powerful return of cravings.
"I experienced a switch activating and I was suddenly extremely hungry," said an individual.
The struggle is worsened if users have not adopted permanent lifestyle or habit changes during treatment.
Widespread Adoption
Recent estimates indicate that millions of adults in the UK have tried these injections in the last 12 months, with demand being substantial.
- Use is higher among females compared to males.
- The 40s and 50s demographic shows the greatest usage rates.
- Many access the medications through private prescriptions rather than the NHS.
Ultimately, experts stress that while these medications are effective tools for shedding pounds, they are not a permanent cure and long-term success relies on integrated lifestyle support.
