Fresh analysis suggests that individuals who discontinue blockbuster slimming jabs like semaglutide or tirzepatide can put back on reduced body mass far faster than those who stop traditional lifestyle regimens.
Research printed in a major medical journal demonstrates that while obese people can lose substantial amounts of their total mass while using the jabs, the mass is regained at an average rate of nearly a kilo each month upon discontinuation.
"Users purchasing such medications should be informed of the risk of fast rebound weight gain when the treatment ends," warns lead investigator Dr. Susan Jebb.
Such speed of recovery means a reversion to starting weight within about 18 months.
Weighing Therapies
The research, which looked at dozens of studies involving thousands of patients, contrasted the results of the injectable medications with older methods.
The team point out that individuals who lose weight through dieting usually see a more gradual weight regain—perhaps 100 grams monthly—post-intervention.
Understanding the Fast Rebound
Nutrition scientists believe the mode of action of the injections explains the heightened rebound.
These medications mimic a natural hormone called GLP-1, which controls appetite.
"Long-term administration of the hormone levels several times higher than normal could lead to the system to produce less of its own natural GLP-1, and could lessen responsiveness to its actions," explained Dr. Adam Collins, a dietetics expert.
"Discontinuation of this GLP-1 'fix' results in hunger is unsuppressed, making binge eating a significant risk."
A Lifelong Condition?
The NHS advise the jabs for people with weight-linked health risks, accompanied by prescribed lifestyle changes.
Many experts argue that, considering the significant potential of relapse, the treatment might need to be long-term.
This opinion is reinforced by pharmaceutical companies, who say that the results "emphasize the long-term character of obesity," comparing it to managing diseases like high blood pressure.
Patient Accounts
Users who have stopped the medication explain a sudden return of cravings.
"It felt as if a trigger that goes on and I was suddenly starving," described a patient.
The struggle is worsened if individuals have not developed permanent dietary or behavioural modifications during therapy.
Growing Interest
Figures show that millions of adults in the UK have tried these injections in the last 12 months, with desire remaining high.
- Adoption is higher among women than men.
- The 40s and 50s demographic shows the greatest level of interest.
- Many access the medications through private prescriptions rather than the NHS.
Finally, clinicians caution that while these medications are potent tools for weight loss, they are not a magic cure and lasting health benefits relies on combined behavioural management.
