A recent study suggests that individuals who discontinue popular GLP-1 drugs like semaglutide or tirzepatide tend to recover shed pounds far faster than those who end conventional diet and exercise programs.
Research printed in a leading health publication points out that while obese individuals frequently drop a large proportion of their body weight while on the medication, the weight comes back at an estimated rate of 0.8 kg per month once they quit.
"Users using these drugs must be informed of the potential of quick weight regain when the treatment ends," cautioned expert Dr. Susan Jebb.
That rate of regain implies a return to starting weight in about 18 months.
Weighing Treatments
The study, which looked at 37 of trials involving thousands of patients, contrasted the outcomes of GLP-1 agonists with conventional dieting.
Researchers point out that people who lose weight through lifestyle changes alone typically have a more gradual creep back—approximately 0.1 kg a month—post-intervention.
The Reason for the Fast Regain
Nutrition scientists propose the way of the drugs is key to understanding the accelerated rebound.
GLP-1 drugs mimic a body's own chemical called glucagon-like peptide-1, which controls appetite.
"Sustained high doses of GLP-1 concentrations far above than the body's typical production could lead to the system to produce less of its own natural GLP-1, and could lessen responsiveness to its effects," said Dr. Adam Collins, a dietetics researcher.
"Withdrawal of this hormone supplement results in hunger is no longer kept in check, making excessive eating much more probable."
A Lifelong Issue?
The NHS advise the jabs for individuals with obesity-related health risks, alongside recommended diet and exercise modifications.
Many experts argue that, given the significant potential of relapse, the therapy might need to be life-long.
This opinion is reinforced by drug manufacturers, who state that the results "highlight the chronic character of excess weight," akin to managing diseases like high blood pressure.
User Accounts
Users who have come off the medication explain a intense resurgence of hunger.
"It felt as if a trigger flipping and you become extremely hungry," recalled a patient.
The struggle is compounded if users have not established permanent dietary or behavioural modifications during therapy.
Significant Use
Survey data indicate that a significant number of adults in the UK have used weight-loss jabs in the last 12 months, with demand being substantial.
- Adoption is higher among females than males.
- The 40s and 50s demographic shows the greatest usage rates.
- A large proportion access the drugs through private healthcare rather than the NHS.
Ultimately, experts stress that while GLP-1 drugs are potent tools for shedding pounds, they are not a permanent fix and maintained weight loss relies on ongoing lifestyle management.
