Fresh analysis suggests that patients who stop using new GLP-1 drugs like semaglutide or tirzepatide can put back on lost weight far faster than those who stop conventional lifestyle regimens.
Research printed in a prominent medical journal shows that while obese individuals can lose substantial amounts of their total mass while using the jabs, the mass comes back at an estimated rate of 0.8 kg per month upon discontinuation.
"Individuals using these drugs need to be cognizant of the potential of rapid weight regain when the therapy ends," cautioned expert Dr. Susan Jebb.
That rate of regain implies a reversion to starting weight in about a year and a half.
Weighing Therapies
The research, which looked at 37 of trials involving thousands of participants, contrasted the effects of GLP-1 agonists with other pills.
The team point out that individuals who shed pounds through diet and exercise typically see a slower creep back—approximately 100 grams monthly—once they finish.
Understanding the Rapid Regain
Doctors propose the mechanism of the injections is key to understanding the heightened regain.
The injections imitate a natural hormone called glucagon-like peptide-1, which moderates hunger.
"Sustained high doses of the hormone concentrations far above than normal might result in the body to produce less of its endogenous hormone, and may also reduce responsiveness to its actions," explained Dr. Adam Collins, a nutrition specialist.
"Withdrawal of this medication results in hunger is unsuppressed, making overeating far more likely."
An Ongoing Condition?
The NHS recommend the injections for individuals with obesity-related health risks, accompanied by prescribed diet and exercise modifications.
Many experts say that, given the significant potential of relapse, the therapy should be considered life-long.
This perspective is supported by pharmaceutical companies, who state that the findings "underscore the chronic nature of excess weight," similar to managing diseases like hypertension.
User Accounts
Users who have discontinued the medication report a intense return of cravings.
"It felt as if something flipping and I was suddenly ravenous," recalled an individual.
This challenge is worsened if individuals have not established permanent lifestyle or habit changes during therapy.
Significant Interest
Figures suggest that a significant number of adults in the UK have used these injections in the past year, with desire continuing to grow.
- Use is more common among women than men.
- The middle-aged age group shows the greatest level of interest.
- Many access the drugs through private prescriptions rather than the NHS.
Ultimately, clinicians caution that while the jabs are effective agents for weight loss, they are not a magic solution and maintained weight loss hinges on integrated lifestyle support.
