Fresh analysis indicates that individuals who stop using new slimming jabs like semaglutide or tirzepatide may regain lost weight far faster than those who stop traditional lifestyle regimens.
Findings released in a major health publication shows that while obese people frequently drop a large proportion of their body weight while on the medication, the mass comes back at an average rate of nearly a kilo each month once they quit.
"Individuals purchasing such drugs must be cognizant of the risk of rapid rebound weight gain when the treatment ends," cautioned lead investigator Dr. Susan Jebb.
This pace of regain implies a reversion to starting mass within about 18 months.
Analyzing Therapies
The research, which examined dozens of trials involving thousands of patients, compared the outcomes of the injectable medications with older methods.
The team emphasize that people who lose weight through lifestyle changes alone typically see a more gradual creep back—approximately 100 grams monthly—once they finish.
Understanding the Rapid Regain
Experts suggest the mechanism of the jabs explains the accelerated regain.
GLP-1 drugs mimic a natural hormone called glucagon-like peptide-1, which helps regulate appetite.
"Sustained high doses of GLP-1 levels far above than normal might result in the system to produce less of its endogenous GLP-1, and may also lessen sensitivity to its actions," noted Dr. Adam Collins, a dietetics specialist.
"Discontinuation of this GLP-1 'fix' means appetite is uncontrolled, making excessive eating much more probable."
A Lifelong Issue?
Health authorities recommend the injections for individuals with weight-linked medical conditions, alongside recommended lifestyle changes.
Professionals argue that, considering the likelihood of weight regain, the treatment might need to be long-term.
This perspective is echoed by drug manufacturers, who state that the findings "underscore the long-term character of excess weight," comparing it to managing conditions like high blood pressure.
Patient Testimonies
People who have stopped the jabs report a powerful resurgence of cravings.
"It felt as if a trigger that goes on and I was suddenly starving," described an individual.
This challenge is compounded if users have not adopted lasting dietary or behavioural changes during therapy.
Significant Adoption
Figures show that millions of adults in the UK have tried these injections in the last 12 months, with demand being substantial.
- Adoption is greater among females than males.
- The middle-aged age group shows the highest usage rates.
- A large proportion access the medications through private healthcare rather than public health services.
Finally, researchers stress that while the jabs are potent tools for shedding pounds, they are not a magic solution and maintained weight loss hinges on ongoing lifestyle support.
