New research reveals that people who discontinue popular GLP-1 drugs like semaglutide or tirzepatide may regain reduced body mass at a significantly accelerated pace than those who end traditional diet and exercise programs.
Findings released in a prominent medical journal shows that while overweight people frequently drop substantial amounts of their body weight while using the jabs, the weight comes back at an average rate of 0.8 kg per month upon discontinuation.
"Users purchasing these drugs need to be cognizant of the danger of rapid rebound weight gain when the medication concludes," warns researcher Dr. Susan Jebb.
Such speed of regain means a return to starting mass in about a year and a half.
Comparing Therapies
The analysis, which looked at 37 of studies involving over 9,000 of participants, contrasted the effects of these new drugs with conventional dieting.
The team point out that individuals who lose weight through lifestyle changes alone generally experience a less rapid weight regain—around 0.1 kg a month—once they finish.
Explaining the Quick Rebound
Experts believe the mode of action of the drugs accounts for the amplified weight return.
These medications mimic a natural hormone called GLP-1, which moderates appetite.
"Long-term administration of the hormone concentrations far above than the body's typical production could lead to the body to generate a reduced amount of its endogenous hormone, and may also lessen sensitivity to its effects," explained Dr. Adam Collins, a dietetics researcher.
"Discontinuation of this medication means appetite is no longer kept in check, making binge eating a significant risk."
An Ongoing Condition?
Health authorities suggest the injections for individuals with weight-linked health risks, accompanied by recommended lifestyle changes.
Many experts say that, due to the likelihood of relapse, the therapy might need to be life-long.
This view is reinforced by pharmaceutical companies, who state that the findings "highlight the chronic character of excess weight," comparing it to managing diseases like high blood pressure.
Patient Testimonies
People who have come off the medication describe a sudden resurgence of appetite.
"I experienced something activating and you become starving," described an individual.
The struggle is worsened if patients have not developed sustainable lifestyle or habit modifications during treatment.
Growing Adoption
Survey data show that millions of people in the UK have used weight-loss jabs in the past year, with demand remaining high.
- Use is greater among women compared to men.
- The 40s and 50s age group shows the greatest level of interest.
- A large proportion obtain the medications through private prescriptions rather than the NHS.
In conclusion, experts caution that while GLP-1 drugs are potent agents for weight loss, they are not a magic cure and lasting health benefits likely depends on ongoing lifestyle support.