New research suggests that people who come off blockbuster weight-loss injections like semaglutide or tirzepatide may regain lost weight much more quickly than those who halt traditional diet and exercise plans.
Findings released in a leading health publication demonstrates that while obese individuals often shed a large proportion of their body weight while on the medication, the mass comes back at an average rate of 0.8 kg per month upon discontinuation.
"Users using such treatments should be aware of the risk of quick weight regain when the therapy is stopped," cautioned researcher Dr. Susan Jebb.
That rate of regain implies a return to original mass in about a year and a half.
Analyzing Treatments
The study, which examined 37 of studies involving thousands of participants, contrasted the effects of these new drugs with conventional dieting.
Scientists point out that people who lose weight through dieting usually see a slower creep back—approximately 0.1 kg a month—post-intervention.
The Reason for the Rapid Regain
Experts propose the mechanism of the jabs is key to understanding the amplified rebound.
The injections mimic a body's own chemical called GLP-1, which moderates feelings of fullness.
"Long-term administration of the hormone concentrations far above than normal may cause the system to generate a reduced amount of its own natural GLP-1, and could reduce sensitivity to its actions," noted Dr. Adam Collins, a nutrition expert.
"Discontinuation of this GLP-1 'fix' results in appetite is uncontrolled, making overeating a significant risk."
An Ongoing Condition?
Health authorities suggest the injections for individuals with weight-linked medical conditions, accompanied by prescribed diet and exercise modifications.
A number of clinicians say that, considering the high risk of weight regain, the treatment might need to be ongoing.
This view is reinforced by drug manufacturers, who say that the findings "highlight the chronic character of obesity," comparing it to managing conditions like high blood pressure.
User Accounts
Individuals who have stopped the medication explain a sudden resurgence of hunger.
"It was like a trigger activating and I was suddenly ravenous," said a patient.
This challenge is worsened if patients have not developed sustainable lifestyle or habit modifications during treatment.
Growing Adoption
Survey data show that a significant number of people in the UK have tried weight-loss jabs in the last 12 months, with demand remaining high.
- Use is higher among females than men.
- The 40s and 50s age group shows the greatest level of interest.
- Many obtain the drugs through private healthcare rather than the NHS.
Ultimately, experts stress that while these medications are effective agents for weight loss, they are not a standalone solution and maintained weight loss hinges on combined lifestyle management.
