Fresh analysis indicates that patients who come off popular weight-loss injections like semaglutide or tirzepatide can put back on reduced body mass much more quickly than those who halt conventional lifestyle regimens.
Research printed in a leading medical journal demonstrates that while overweight individuals can lose about a fifth of their total mass while on the medication, the mass returns at an estimated rate of nearly a kilo each month upon discontinuation.
"Individuals using these medications need to be aware of the potential of fast weight regain when the medication ends," warns lead investigator Dr. Susan Jebb.
That rate of recovery suggests a return to pre-treatment mass in about 18 months.
Analyzing Therapies
The analysis, which reviewed 37 of trials involving thousands of patients, contrasted the effects of these new drugs with older methods.
Scientists note that individuals who lose weight through diet and exercise generally have a less rapid weight regain—approximately 100 grams monthly—after stopping.
Understanding the Rapid Regain
Doctors propose the mode of action of the injections accounts for the amplified rebound.
These medications copy a body's own chemical called glucagon-like peptide-1, which helps regulate hunger.
"Sustained high doses of the hormone concentrations several times higher than normal may cause the body to produce less of its endogenous GLP-1, and may also reduce responsiveness to its effects," said Dr. Adam Collins, a dietetics specialist.
"Stopping of this hormone supplement means appetite is uncontrolled, making binge eating far more likely."
A Chronic Disease?
The NHS advise the jabs for people with obesity-related medical conditions, alongside prescribed diet and exercise modifications.
A number of clinicians say that, due to the high risk of relapse, the treatment might need to be life-long.
This perspective is echoed by drug manufacturers, who note that the findings "highlight the chronic character of excess weight," comparing it to managing conditions like hypertension.
User Experiences
People who have come off the medication describe a powerful resurgence of cravings.
"It was like something activating and you're instantly ravenous," recalled one woman.
The struggle is worsened if users have not developed permanent dietary or behavioural changes during treatment.
Widespread Use
Recent estimates suggest that a significant number of adults in the UK have tried weight-loss jabs in the past year, with desire remaining high.
- Adoption is more common among females compared to men.
- The 40s and 50s age group shows the highest usage rates.
- A large proportion obtain the drugs through private healthcare rather than the NHS.
Finally, experts stress that while the jabs are powerful agents for shedding pounds, they are not a permanent solution and maintained weight loss relies on integrated lifestyle support.
