New research indicates that people who stop using popular weight-loss injections like semaglutide or tirzepatide may regain lost weight at a significantly accelerated pace than those who halt traditional lifestyle programs.
Published data in a major health publication shows that while obese individuals often shed a large proportion of their body weight while using the jabs, the mass returns at an average rate of 0.8 kg per month after stopping.
"People using such drugs should be cognizant of the risk of rapid rebound weight gain when the treatment ends," warns expert Dr. Susan Jebb.
Such speed of regain means a return to pre-treatment weight in about one and a half years.
Comparing Therapies
The analysis, which looked at dozens of studies involving over 9,000 of participants, contrasted the outcomes of the injectable medications with other pills.
The team note that individuals who lose weight through dieting typically have a slower creep back—perhaps 0.1 kg a month—once they finish.
The Reason for the Rapid Regain
Nutrition scientists suggest the mechanism of the injections is key to understanding the heightened rebound.
GLP-1 drugs imitate a body's own chemical called glucagon-like peptide-1, which controls hunger.
"Sustained high doses of the hormone levels several times higher than normal might result in the body to generate a reduced amount of its own natural GLP-1, and could lessen responsiveness to its actions," noted Dr. Adam Collins, a nutrition specialist.
"Stopping of this GLP-1 'fix' leads to appetite is uncontrolled, making overeating a significant risk."
An Ongoing Condition?
Medical guidelines suggest the injections for people with obesity-related health risks, alongside prescribed lifestyle changes.
Many experts argue that, due to the significant potential of weight regain, the therapy should be considered long-term.
This view is reinforced by pharmaceutical companies, who note that the findings "highlight the persistent nature of excess weight," similar to managing conditions like hypertension.
User Experiences
Individuals who have come off the jabs describe a powerful return of cravings.
"It felt as if a trigger activating and you become ravenous," recalled one woman.
The struggle is exacerbated if patients have not established lasting lifestyle or habit modifications during treatment.
Widespread Interest
Figures indicate that millions of adults in the UK have tried these injections in the last 12 months, with interest continuing to grow.
- Adoption is more common among women than males.
- The middle-aged demographic shows the highest usage rates.
- Many obtain the drugs through private healthcare rather than the NHS.
Ultimately, researchers stress that while the jabs are powerful tools for weight loss, they are not a magic solution and long-term success likely depends on integrated lifestyle management.
