New research reveals that patients who discontinue new weight-loss injections like semaglutide or tirzepatide tend to recover reduced body mass at a significantly accelerated pace than those who stop conventional diet and exercise programs.
Published data in a leading health publication shows that while overweight people can lose 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.
"Individuals using such drugs should be cognizant of the potential of fast rebound weight gain when the medication is stopped," stated lead investigator Dr. Susan Jebb.
This pace of regain means a return to original weight in about 18 months.
Analyzing Treatments
The study, which reviewed dozens of trials involving thousands of participants, compared the outcomes of these new drugs with older methods.
The team point out that individuals who lose weight through dieting typically see a slower creep back—around 100 grams monthly—once they finish.
Understanding the Fast Regain
Doctors suggest the mechanism of the jabs is key to understanding the accelerated rebound.
The injections mimic a body's own chemical called glucagon-like peptide-1, which helps regulate appetite.
"Sustained high doses of GLP-1 levels several times higher than normal could lead to the system to generate a reduced amount of its endogenous GLP-1, and could lessen sensitivity to its effects," explained Dr. Adam Collins, a dietetics researcher.
"Discontinuation of this hormone supplement means hunger is unsuppressed, making overeating a significant risk."
A Lifelong Issue?
Medical guidelines suggest the injections for people with weight-linked medical conditions, alongside prescribed lifestyle changes.
Many experts contend that, considering the significant potential of weight regain, the treatment might need to be life-long.
This perspective is reinforced by pharmaceutical companies, who say that the findings "emphasize the chronic nature of obesity," comparing it to managing conditions like hypertension.
Patient Testimonies
Users who have discontinued the jabs report a sudden return of appetite.
"It felt as if something that goes on and you become ravenous," said a patient.
This challenge is worsened if patients have not developed permanent lifestyle or habit changes during treatment.
Widespread Use
Recent estimates indicate that millions of adults in the UK have tried these injections in the last 12 months, with demand remaining high.
- Use is more common among females than men.
- The middle-aged demographic shows the greatest usage rates.
- A large proportion access the medications through private prescriptions rather than the NHS.
Finally, researchers caution that while the jabs are powerful agents for weight loss, they are not a permanent fix and lasting health benefits hinges on integrated lifestyle management.
