Fresh analysis suggests that individuals who stop using new weight-loss injections like semaglutide or tirzepatide tend to recover lost weight much more quickly than those who stop traditional lifestyle regimens.
Published data in a major health publication shows that while overweight individuals can lose substantial amounts of their total mass while on the medication, the weight returns at an average rate of nearly a kilo each month after stopping.
"Individuals using such drugs need to be informed of the danger of quick rebound weight gain when the treatment is stopped," stated lead investigator Dr. Susan Jebb.
Such speed of regain implies a return to starting weight within about a year and a half.
Weighing Treatments
The study, which reviewed dozens of trials involving thousands of patients, compared the results of these new drugs with other pills.
Scientists note that individuals who lose weight through lifestyle changes alone typically have a slower creep back—around 100 grams monthly—once they finish.
Understanding the Fast Regain
Doctors suggest the way of the injections accounts for the amplified regain.
GLP-1 drugs mimic a body's own chemical called GLP-1, which helps regulate feelings of fullness.
"Artificially providing the hormone levels several times higher than the body's typical production could lead to the system to produce less of its endogenous GLP-1, and may also diminish sensitivity to its effects," explained Dr. Adam Collins, a dietetics expert.
"Stopping of this hormone supplement results in appetite is uncontrolled, making binge eating much more probable."
A Lifelong Condition?
Health authorities advise the injections for individuals with weight-linked health risks, accompanied by recommended diet and exercise modifications.
Many experts contend that, due to the likelihood of weight regain, the therapy might need to be life-long.
This opinion is supported by drug manufacturers, who say that the results "highlight the persistent nature of obesity," similar to managing diseases like diabetes.
User Experiences
People who have stopped the jabs report a sudden return of cravings.
"It felt as if a switch activating and you become ravenous," said a patient.
This challenge is exacerbated if users have not adopted lasting lifestyle or habit modifications during treatment.
Significant Use
Survey data suggest that millions of people in the UK have used these injections in the past year, with demand being substantial.
- Use is more common among females than males.
- The middle-aged age group shows the highest level of interest.
- A large proportion obtain the medications through private healthcare rather than the NHS.
Finally, experts caution that while these medications are potent agents for weight loss, they are not a permanent fix and long-term success hinges on combined lifestyle changes.
