Fresh analysis reveals that people who come off new weight-loss injections like semaglutide or tirzepatide may regain shed pounds far faster than those who halt traditional diet and exercise regimens.
Published data in a leading medical journal shows that while overweight individuals often shed substantial amounts of their body weight while on the medication, the weight comes back at an average rate of nearly a kilo each month upon discontinuation.
"Individuals buying these drugs should be aware of the risk of rapid rebound weight gain when the treatment ends," stated researcher Dr. Susan Jebb.
Such speed of recovery suggests a reversion to pre-treatment weight in about 18 months.
Analyzing Approaches
The study, which examined dozens of studies involving over 9,000 of participants, contrasted the outcomes of these new drugs with older methods.
The team point out that individuals who lose weight through diet and exercise generally have a more gradual creep back—around 100 grams monthly—once they finish.
The Reason for the Rapid Regain
Experts propose the mechanism of the jabs is key to understanding the amplified regain.
The injections imitate a natural hormone called GLP-1, which moderates feelings of fullness.
"Long-term administration of GLP-1 levels several times higher than normal could lead to the system to produce less of its endogenous GLP-1, and may also lessen sensitivity to its actions," said Dr. Adam Collins, a dietetics researcher.
"Stopping of this GLP-1 'fix' means appetite is unsuppressed, making overeating much more probable."
An Ongoing Issue?
Medical guidelines suggest the jabs for people with weight-linked medical conditions, accompanied by recommended diet and exercise modifications.
Professionals say that, given the likelihood of relapse, the therapy is often long-term.
This view is echoed by drug manufacturers, who note that the results "underscore the chronic nature of excess weight," similar to managing conditions like hypertension.
User Testimonies
Individuals who have discontinued the jabs report a powerful resurgence of hunger.
"It was like something that goes on and you're instantly extremely hungry," said one woman.
This difficulty is exacerbated if patients have not developed permanent lifestyle or habit modifications during treatment.
Growing Interest
Recent estimates indicate that millions of people in the UK have used these injections in the past year, with interest remaining high.
- Adoption is greater among females compared to men.
- The middle-aged age group shows the highest usage rates.
- A large proportion obtain the medications through private prescriptions rather than the NHS.
Ultimately, clinicians emphasize that while these medications are powerful tools for weight loss, they are not a standalone fix and maintained weight loss likely depends on integrated behavioural support.
