Fresh analysis reveals that people who come off new weight-loss injections like semaglutide or tirzepatide can put back on reduced body mass much more quickly than those who stop conventional lifestyle plans.
Research printed in a leading health publication points out that while overweight individuals often shed a large proportion of their body weight while on the medication, the weight comes back at an estimated rate of 0.8 kg per month after stopping.
"People buying these drugs should be informed of the potential of quick weight regain when the therapy concludes," cautioned lead investigator Dr. Susan Jebb.
That rate of recovery means a return to original weight in about one and a half years.
Weighing Treatments
The study, which looked at dozens of studies involving over 9,000 of patients, compared the effects of the injectable medications with older methods.
The team point out that individuals who shed pounds through dieting typically see a less rapid weight regain—perhaps 100 grams monthly—post-intervention.
Explaining the Rapid Rebound
Nutrition scientists propose the mechanism of the jabs explains the accelerated regain.
GLP-1 drugs imitate a body's own chemical called GLP-1, which moderates appetite.
"Artificially providing GLP-1 concentrations several times higher than normal may cause the system to generate a reduced amount of its endogenous GLP-1, and may also diminish responsiveness to its effects," said Dr. Adam Collins, a dietetics specialist.
"Withdrawal of this hormone supplement leads to hunger is unsuppressed, making excessive eating far more likely."
An Ongoing Condition?
The NHS recommend the injections for people with weight-linked health risks, alongside recommended lifestyle changes.
Many experts contend that, given the high risk of relapse, the treatment should be considered life-long.
This opinion is reinforced by drug manufacturers, who note that the findings "emphasize the long-term nature of excess weight," similar to managing diseases like high blood pressure.
User Accounts
Individuals who have stopped the medication report a powerful resurgence of cravings.
"It felt as if something that goes on and I was suddenly starving," recalled a patient.
This difficulty is exacerbated if users have not adopted lasting dietary or behavioural modifications during therapy.
Widespread Interest
Survey data suggest that a significant number of people in the UK have used these injections in the last 12 months, with desire being substantial.
- Use is more common among women than men.
- The 40s and 50s age group shows the highest usage rates.
- A large proportion obtain the medications through private prescriptions rather than the NHS.
Finally, researchers emphasize that while the jabs are effective agents for shedding pounds, they are not a standalone solution and lasting health benefits hinges on combined lifestyle support.
