New research reveals that individuals who stop using blockbuster slimming jabs like semaglutide or tirzepatide can put back on lost weight at a significantly accelerated pace than those who stop conventional diet and exercise plans.
Research printed in a major medical journal demonstrates that while obese individuals frequently drop a large proportion of their total mass while on the medication, the weight comes back at an estimated rate of nearly a kilo each month after stopping.
"Individuals buying these treatments need to be informed of the risk of rapid rebound weight gain when the medication is stopped," stated expert Dr. Susan Jebb.
That rate of regain means a return to pre-treatment weight in about one and a half years.
Analyzing Approaches
The study, which reviewed 37 of trials involving over 9,000 of participants, contrasted the outcomes of these new drugs with other pills.
Researchers point out that people who lose weight through lifestyle changes alone typically experience a more gradual creep back—around 0.1 kg a month—after stopping.
The Reason for the Fast Regain
Nutrition scientists suggest the mechanism of the jabs is key to understanding the heightened rebound.
These medications imitate a body's own chemical called glucagon-like peptide-1, which helps regulate feelings of fullness.
"Sustained high doses of the hormone levels several times higher than the body's typical production might result in the body to produce less of its endogenous hormone, and could diminish responsiveness to its actions," explained Dr. Adam Collins, a nutrition expert.
"Withdrawal of this hormone supplement results in hunger is uncontrolled, making binge eating a significant risk."
A Lifelong Issue?
Medical guidelines recommend the injections for individuals with weight-linked medical conditions, alongside recommended diet and exercise modifications.
Many experts argue that, given the significant potential of weight regain, the therapy should be considered life-long.
This view is reinforced by drug manufacturers, who say that the results "underscore the chronic character of excess weight," comparing it to managing diseases like diabetes.
Patient Testimonies
People who have discontinued the jabs report a intense resurgence of cravings.
"It felt as if something activating and I was suddenly ravenous," described an individual.
The struggle is compounded if individuals have not adopted permanent lifestyle or habit changes during therapy.
Growing Interest
Survey data show that a significant number of adults in the UK have used these injections in the last 12 months, with demand being substantial.
- Adoption is more common among women than men.
- The middle-aged age group shows the greatest usage rates.
- Many obtain the medications through private prescriptions rather than the NHS.
Ultimately, researchers stress that while the jabs are effective tools for shedding pounds, they are not a magic fix and lasting health benefits relies on integrated behavioural management.
