New research suggests that patients who come off new weight-loss injections like semaglutide or tirzepatide can put back on lost weight much more quickly than those who end conventional lifestyle plans.
Research printed in a leading health publication points out that while overweight individuals frequently drop substantial amounts of their total mass while using the jabs, the mass comes back at an estimated rate of nearly a kilo each month upon discontinuation.
"Users using these drugs must be informed of the danger of fast rebound weight gain when the medication ends," stated expert Dr. Susan Jebb.
That rate of recovery means a reversion to starting mass within about 18 months.
Comparing Treatments
The study, which examined 37 of trials involving over 9,000 of participants, contrasted the results of these new drugs with conventional dieting.
Researchers note that individuals who shed pounds through diet and exercise generally experience a slower creep back—perhaps 0.1 kg a month—once they finish.
Explaining the Quick Rebound
Experts suggest the mode of action of the injections accounts for the accelerated weight return.
GLP-1 drugs copy a body's own chemical called glucagon-like peptide-1, which helps regulate hunger.
"Artificially providing the hormone levels several times higher than the body's typical production could lead to the system to generate a reduced amount of its own natural hormone, and could diminish responsiveness to its effects," explained Dr. Adam Collins, a dietetics expert.
"Stopping of this hormone supplement means appetite is uncontrolled, making overeating a significant risk."
An Ongoing Issue?
Medical guidelines suggest the jabs for individuals with obesity-related health risks, accompanied by prescribed lifestyle changes.
A number of clinicians argue that, given the significant potential of relapse, the treatment might need to be long-term.
This opinion is echoed by drug manufacturers, who note that the results "emphasize the chronic nature of excess weight," comparing it to managing diseases like high blood pressure.
User Experiences
People who have stopped the medication describe a sudden resurgence of cravings.
"It was like a switch activating and you become starving," recalled one woman.
This difficulty is exacerbated if individuals have not established permanent lifestyle or habit modifications during therapy.
Growing Use
Recent estimates show that millions of adults in the UK have tried these injections in the last 12 months, with demand remaining high.
- Use is greater among women than men.
- The middle-aged demographic shows the highest usage rates.
- Many access the drugs through private prescriptions rather than public health services.
Ultimately, clinicians emphasize that while these medications are potent agents for weight loss, they are not a standalone solution and maintained weight loss relies on combined behavioural support.
