Fresh analysis reveals that people who come off new weight-loss injections like semaglutide or tirzepatide can put back on shed pounds much more quickly than those who end traditional lifestyle programs.
Findings released in a prominent medical journal demonstrates that while overweight people can lose a large proportion of their total mass while undergoing treatment, the weight comes back at an average rate of nearly a kilo each month upon discontinuation.
"Individuals using such drugs need to be cognizant of the danger of quick weight regain when the therapy concludes," warns researcher Dr. Susan Jebb.
That rate of recovery implies a return to original mass in about 18 months.
Weighing Therapies
The analysis, which looked at dozens of studies involving over 9,000 of patients, contrasted the outcomes of these new drugs with older methods.
The team note that individuals who lose weight through lifestyle changes alone typically see a slower creep back—around 0.1 kg a month—post-intervention.
The Reason for the Rapid Regain
Doctors believe the way of the jabs accounts for the accelerated rebound.
GLP-1 drugs copy a body's own chemical called glucagon-like peptide-1, which moderates hunger.
"Artificially providing the hormone levels several times higher than the body's typical production might result in the system to produce less of its endogenous hormone, and could diminish sensitivity to its actions," noted Dr. Adam Collins, a dietetics specialist.
"Withdrawal of this hormone supplement means hunger is no longer kept in check, making binge eating a significant risk."
An Ongoing Issue?
The NHS recommend the jabs for individuals with weight-linked medical conditions, alongside prescribed lifestyle changes.
Professionals contend that, considering the significant potential of weight regain, the treatment should be considered life-long.
This view is supported by pharmaceutical companies, who note that the results "highlight the long-term character of excess weight," similar to managing diseases like diabetes.
Patient Experiences
People who have come off the medication describe a powerful return of cravings.
"It was like a trigger flipping and you become ravenous," described a patient.
This challenge is compounded if users have not established permanent dietary or behavioural modifications during treatment.
Widespread Adoption
Survey data suggest that millions of adults in the UK have tried weight-loss jabs in the past year, with demand remaining high.
- Use is greater among females compared to males.
- The 40s and 50s demographic shows the highest usage rates.
- A large proportion access the medications through private healthcare rather than the NHS.
Finally, researchers emphasize that while these medications are powerful tools for shedding pounds, they are not a permanent fix and maintained weight loss hinges on integrated behavioural changes.
