New research suggests that patients who stop using new GLP-1 drugs like semaglutide or tirzepatide can put back on reduced body mass far faster than those who stop conventional diet and exercise plans.
Research printed in a leading medical journal shows that while obese people frequently drop about a fifth of their body weight while on the medication, the weight comes back at an estimated rate of nearly a kilo each month upon discontinuation.
"Individuals purchasing such medications should be aware of the potential of quick rebound weight gain when the medication is stopped," stated expert Dr. Susan Jebb.
This pace of recovery implies a return to starting mass in about a year and a half.
Comparing Approaches
The research, which examined 37 of studies involving over 9,000 of patients, compared the results of these new drugs with conventional dieting.
Scientists point out that individuals who lose weight through lifestyle changes alone typically experience a more gradual creep back—perhaps 0.1 kg a month—post-intervention.
The Reason for the Rapid Regain
Experts propose the mechanism of the drugs accounts for the heightened weight return.
These medications imitate a natural hormone called GLP-1, which helps regulate hunger.
"Artificially providing the hormone levels several times higher than the body's typical production might result in the system to generate a reduced amount of its endogenous GLP-1, and may also lessen responsiveness to its effects," said Dr. Adam Collins, a nutrition researcher.
"Withdrawal of this hormone supplement leads to hunger is unsuppressed, making overeating far more likely."
A Chronic Issue?
Medical guidelines recommend the jabs for individuals with weight-linked health risks, alongside recommended lifestyle changes.
A number of clinicians argue that, given the significant potential of weight regain, the therapy is often life-long.
This opinion is supported by drug manufacturers, who say that the results "underscore the chronic nature of obesity," comparing it to managing conditions like high blood pressure.
Patient Accounts
Individuals who have come off the medication describe a powerful return of hunger.
"I experienced a trigger that goes on and you become starving," said a patient.
This difficulty is worsened if individuals have not adopted sustainable dietary or behavioural changes during treatment.
Growing Adoption
Survey data show that a significant number of adults in the UK have tried weight-loss jabs in the last 12 months, with desire continuing to grow.
- Use is more common among women than males.
- The middle-aged demographic shows the highest level of interest.
- A large proportion access the drugs through private prescriptions rather than the NHS.
In conclusion, experts emphasize that while the jabs are effective agents for shedding pounds, they are not a standalone solution and maintained weight loss likely depends on integrated lifestyle changes.
