New research indicates that patients who discontinue popular GLP-1 drugs like semaglutide or tirzepatide can put back on reduced body mass far faster than those who halt traditional diet and exercise regimens.
Published data in a prominent medical journal demonstrates that while obese people can lose a large proportion of their total mass while undergoing treatment, the weight comes back at an estimated rate of nearly a kilo each month upon discontinuation.
"Individuals using these drugs need to be informed of the danger of quick rebound weight gain when the therapy concludes," cautioned researcher Dr. Susan Jebb.
This pace of recovery suggests a return to original mass in about 18 months.
Weighing Approaches
The research, which looked at 37 of trials involving over 9,000 of patients, contrasted the effects of these new drugs with older methods.
The team point out that individuals who lose weight through diet and exercise generally experience a slower creep back—around 100 grams monthly—once they finish.
The Reason for the Rapid Regain
Nutrition scientists believe the mechanism of the jabs is key to understanding the accelerated weight return.
The injections mimic a body's own chemical called GLP-1, which controls hunger.
"Long-term administration of the hormone concentrations several times higher than normal may cause the system to produce less of its endogenous hormone, and could reduce responsiveness to its effects," said Dr. Adam Collins, a dietetics specialist.
"Stopping of this hormone supplement leads to appetite is no longer kept in check, making overeating a significant risk."
A Chronic Disease?
The NHS recommend the jabs for people with obesity-related health risks, alongside prescribed lifestyle changes.
Professionals contend that, given the high risk of relapse, the therapy should be considered ongoing.
This perspective is supported by drug manufacturers, who say that the findings "underscore the persistent character of excess weight," comparing it to managing conditions like hypertension.
User Testimonies
People who have come off the jabs describe a intense resurgence of cravings.
"It was like something flipping and I was suddenly extremely hungry," said an individual.
This difficulty is worsened if patients have not established permanent dietary or behavioural changes during treatment.
Widespread Use
Recent estimates indicate that a significant number of adults in the UK have tried weight-loss jabs in the last 12 months, with desire continuing to grow.
- Adoption is more common among women compared to males.
- The 40s and 50s age group shows the highest level of interest.
- A large proportion obtain the medications through private prescriptions rather than public health services.
Ultimately, experts caution that while these medications are effective tools for weight loss, they are not a magic fix and lasting health benefits relies on ongoing behavioural changes.
