New research reveals that patients who come off popular GLP-1 drugs like semaglutide or tirzepatide may regain lost weight far faster than those who halt traditional lifestyle plans.
Findings released in a prominent health publication demonstrates that while overweight people often shed about a fifth of their total mass while undergoing treatment, the weight returns at an estimated rate of nearly a kilo each month upon discontinuation.
"Users buying these medications need to be informed of the danger of rapid rebound weight gain when the treatment ends," cautioned lead investigator Dr. Susan Jebb.
This pace of recovery suggests a reversion to pre-treatment weight within about one and a half years.
Comparing Therapies
The study, which reviewed 37 of studies involving thousands of patients, contrasted the results of these new drugs with other pills.
Researchers note that individuals who shed pounds through diet and exercise typically have a slower weight regain—approximately 0.1 kg a month—post-intervention.
The Reason for the Quick Rebound
Nutrition scientists propose the mode of action of the drugs accounts for the heightened weight return.
The injections mimic a body's own chemical called glucagon-like peptide-1, which moderates feelings of fullness.
"Long-term administration of the hormone levels several times higher than normal may cause the body to produce less of its endogenous hormone, and may also lessen sensitivity to its effects," explained Dr. Adam Collins, a dietetics specialist.
"Withdrawal of this GLP-1 'fix' results in appetite is no longer kept in check, making overeating a significant risk."
An Ongoing Condition?
Medical guidelines recommend the injections for individuals with weight-linked health risks, alongside recommended diet and exercise modifications.
Many experts say that, due to the significant potential of relapse, the treatment might need to be life-long.
This opinion is echoed by pharmaceutical companies, who state that the results "underscore the long-term character of obesity," akin to managing diseases like hypertension.
Patient Accounts
Individuals who have come off the jabs explain a sudden resurgence of cravings.
"It was like a trigger that goes on and you become starving," recalled one woman.
This difficulty is compounded if users have not adopted sustainable dietary or behavioural changes during treatment.
Widespread Use
Survey data suggest that a significant number of people in the UK have used these injections in the past year, with desire being substantial.
- Adoption is greater among women than males.
- The 40s and 50s age group shows the greatest usage rates.
- A large proportion obtain the drugs through private prescriptions rather than public health services.
Finally, experts caution that while the jabs are potent tools for shedding pounds, they are not a permanent fix and lasting health benefits relies on ongoing behavioural support.
