New research reveals that patients who stop using popular weight-loss injections like semaglutide or tirzepatide tend to recover shed pounds far faster than those who halt conventional lifestyle regimens.
Published data in a major medical journal shows that while overweight individuals can lose about a fifth of their body weight while using the jabs, the mass comes back at an estimated rate of nearly a kilo each month after stopping.
"Users buying these drugs need to be cognizant of the potential of quick rebound weight gain when the medication ends," cautioned expert Dr. Susan Jebb.
That rate of recovery implies a reversion to pre-treatment weight in about 18 months.
Analyzing Treatments
The analysis, which looked at dozens of trials involving thousands of participants, compared the results of GLP-1 agonists with other pills.
Scientists emphasize that people who lose weight through lifestyle changes alone generally have a slower weight regain—perhaps 100 grams monthly—after stopping.
The Reason for the Fast Regain
Experts propose the mechanism of the drugs accounts for the amplified regain.
These medications copy a natural hormone called glucagon-like peptide-1, which helps regulate appetite.
"Artificially providing the hormone levels far above than the body's typical production may cause the system to produce less of its endogenous GLP-1, and may also diminish sensitivity to its effects," said Dr. Adam Collins, a dietetics researcher.
"Discontinuation of this medication means appetite is uncontrolled, making overeating far more likely."
A Lifelong Condition?
Health authorities suggest the injections for individuals with weight-linked medical conditions, alongside recommended lifestyle changes.
Many experts say that, considering the significant potential of relapse, the therapy might need to be long-term.
This opinion is echoed by drug manufacturers, who note that the findings "emphasize the long-term character of excess weight," comparing it to managing conditions like high blood pressure.
Patient Experiences
Individuals who have discontinued the medication report a sudden resurgence of hunger.
"It was like a switch activating and I was suddenly extremely hungry," said an individual.
This challenge is exacerbated if patients have not established permanent dietary or behavioural modifications during therapy.
Widespread Use
Recent estimates indicate that a significant number of adults in the UK have tried weight-loss jabs in the past year, with demand being substantial.
- Use is higher among females than males.
- The middle-aged age group shows the greatest usage rates.
- A large proportion access the drugs through private healthcare rather than public health services.
Ultimately, researchers caution that while GLP-1 drugs are powerful agents for shedding pounds, they are not a permanent cure and lasting health benefits relies on ongoing lifestyle changes.
