Fresh analysis suggests that individuals who discontinue blockbuster GLP-1 drugs like semaglutide or tirzepatide tend to recover shed pounds much more quickly than those who end traditional lifestyle plans.
Findings released in a major medical journal demonstrates that while obese people frequently drop about a fifth of their body weight while on the medication, the weight comes back at an average rate of 0.8 kg per month once they quit.
"Individuals using these treatments should be cognizant of the danger of fast rebound weight gain when the therapy ends," cautioned researcher Dr. Susan Jebb.
Such speed of regain means a return to pre-treatment mass within about 18 months.
Comparing Therapies
The analysis, which reviewed dozens of trials involving thousands of participants, contrasted the outcomes of these new drugs with older methods.
Researchers point out that people who lose weight through diet and exercise typically have a slower weight regain—perhaps 0.1 kg a month—after stopping.
Explaining the Quick Regain
Nutrition scientists propose the mechanism of the drugs explains the heightened weight return.
The injections copy a natural hormone called glucagon-like peptide-1, which moderates feelings of fullness.
"Sustained high doses of the hormone levels several times higher than the body's typical production might result in the body to generate a reduced amount of its endogenous GLP-1, and may also lessen sensitivity to its effects," explained Dr. Adam Collins, a nutrition researcher.
"Discontinuation of this medication results in hunger is uncontrolled, making excessive eating far more likely."
An Ongoing Disease?
Health authorities advise the jabs for people with obesity-related medical conditions, accompanied by recommended lifestyle changes.
Professionals contend that, considering the high risk of weight regain, the therapy is often long-term.
This opinion is reinforced by drug manufacturers, who say that the results "underscore the long-term character of excess weight," comparing it to managing conditions like high blood pressure.
Patient Accounts
Individuals who have come off the jabs explain a intense return of appetite.
"It was like a switch that goes on and you're instantly extremely hungry," said a patient.
This difficulty is exacerbated if patients have not developed sustainable lifestyle or habit changes during therapy.
Significant Adoption
Survey data suggest that a significant number of people in the UK have tried these injections in the last 12 months, with interest continuing to grow.
- Use is higher among women than males.
- The middle-aged age group shows the greatest usage rates.
- A large proportion obtain the medications through private healthcare rather than the NHS.
Ultimately, clinicians stress that while these medications are effective tools for shedding pounds, they are not a standalone fix and long-term success likely depends on combined lifestyle support.
