Fresh analysis reveals that people who discontinue blockbuster GLP-1 drugs like semaglutide or tirzepatide may regain shed pounds far faster than those who stop traditional diet and exercise plans.
Research printed in a leading medical journal shows that while obese individuals can lose a large proportion of their total mass while using the jabs, the mass comes back at an estimated rate of 0.8 kg per month after stopping.
"People using such drugs need to be cognizant of the danger of rapid weight regain when the treatment is stopped," stated lead investigator Dr. Susan Jebb.
Such speed of regain means a return to pre-treatment weight within about 18 months.
Comparing Approaches
The study, which looked at 37 of trials involving thousands of participants, contrasted the effects of GLP-1 agonists with other pills.
Scientists point out that people who shed pounds through lifestyle changes alone usually see a less rapid weight regain—around 0.1 kg a month—once they finish.
The Reason for the Fast Regain
Doctors suggest the mechanism of the drugs is key to understanding the accelerated rebound.
These medications imitate a body's own chemical called glucagon-like peptide-1, which moderates feelings of fullness.
"Artificially providing the hormone levels several times higher than the body's typical production may cause the system to produce less of its own natural GLP-1, and could diminish sensitivity to its actions," said Dr. Adam Collins, a nutrition specialist.
"Discontinuation of this hormone supplement leads to hunger is uncontrolled, making overeating a significant risk."
A Chronic Disease?
The NHS suggest the jabs for people with weight-linked health risks, accompanied by prescribed lifestyle changes.
Professionals say that, considering the significant potential of weight regain, the therapy might need to be long-term.
This perspective is reinforced by pharmaceutical companies, who say that the findings "highlight the long-term character of obesity," similar to managing conditions like high blood pressure.
Patient Testimonies
Users who have stopped the medication explain a sudden return of cravings.
"It was like a switch that goes on and you become starving," recalled a patient.
This difficulty is worsened if patients have not established lasting lifestyle or habit changes during therapy.
Growing Adoption
Recent estimates indicate that a significant number of adults in the UK have used these injections in the last 12 months, with desire being substantial.
- Use is greater among women than males.
- The middle-aged age group shows the highest level of interest.
- A large proportion obtain the drugs through private prescriptions rather than the NHS.
In conclusion, clinicians caution that while these medications are effective agents for shedding pounds, they are not a magic cure and lasting health benefits likely depends on combined behavioural management.
