Fresh analysis reveals that people who discontinue popular weight-loss injections like semaglutide or tirzepatide may regain lost weight far faster than those who end traditional lifestyle programs.
Research printed in a leading health publication demonstrates that while obese people frequently drop a large proportion of their total mass while on the medication, the weight comes back at an estimated rate of 0.8 kg per month after stopping.
"People buying such medications need to be informed of the risk of quick rebound weight gain when the medication is stopped," stated lead investigator Dr. Susan Jebb.
That rate of recovery means a return to starting mass within about one and a half years.
Weighing Therapies
The study, which reviewed 37 of trials involving thousands of patients, contrasted the results of the injectable medications with older methods.
Scientists emphasize that people who lose weight through dieting usually see a less rapid weight regain—approximately 100 grams monthly—once they finish.
Explaining the Quick Rebound
Nutrition scientists believe the way of the jabs is key to understanding the accelerated rebound.
GLP-1 drugs imitate a natural hormone called GLP-1, which moderates feelings of fullness.
"Artificially providing GLP-1 levels several times higher than the body's typical production could lead to the body to produce less of its endogenous hormone, and could lessen sensitivity to its actions," explained Dr. Adam Collins, a nutrition specialist.
"Discontinuation of this hormone supplement results in hunger is unsuppressed, making binge eating a significant risk."
A Lifelong Issue?
The NHS recommend the jabs for individuals with weight-linked health risks, alongside recommended diet and exercise modifications.
Many experts argue that, considering the likelihood of weight regain, the therapy might need to be ongoing.
This perspective is supported by pharmaceutical companies, who note that the results "underscore the long-term nature of excess weight," comparing it to managing diseases like hypertension.
Patient Experiences
Individuals who have come off the medication describe a sudden resurgence of appetite.
"It felt as if something flipping and you become extremely hungry," said one woman.
The struggle is exacerbated if individuals have not adopted permanent dietary or behavioural modifications during treatment.
Growing Adoption
Survey data indicate that a significant number of people in the UK have tried these injections in the last 12 months, with interest remaining high.
- Adoption is more common among women compared to males.
- The middle-aged age group shows the greatest usage rates.
- A large proportion obtain the drugs through private healthcare rather than the NHS.
Finally, researchers emphasize that while the jabs are effective tools for weight loss, they are not a magic solution and maintained weight loss relies on combined behavioural support.
