New research suggests that patients who discontinue popular GLP-1 drugs like semaglutide or tirzepatide may regain reduced body mass at a significantly accelerated pace than those who stop conventional diet and exercise programs.
Published data in a leading health publication demonstrates that while overweight people frequently drop about a fifth of their total mass while undergoing treatment, the mass returns at an estimated rate of nearly a kilo each month after stopping.
"Individuals using these treatments must be cognizant of the danger of fast rebound weight gain when the medication concludes," cautioned researcher Dr. Susan Jebb.
That rate of regain implies a reversion to pre-treatment weight in about a year and a half.
Weighing Approaches
The study, which examined dozens of studies involving over 9,000 of patients, compared the outcomes of these new drugs with other pills.
The team note that people who lose weight through dieting usually experience a slower weight regain—approximately 0.1 kg a month—after stopping.
Understanding the Quick Regain
Nutrition scientists believe the mechanism of the drugs accounts for the accelerated regain.
These medications imitate a natural hormone called GLP-1, which moderates feelings of fullness.
"Long-term administration of GLP-1 concentrations far above than normal might result in the system to produce less of its endogenous hormone, and could reduce sensitivity to its effects," said Dr. Adam Collins, a dietetics expert.
"Discontinuation of this medication leads to hunger is unsuppressed, making overeating a significant risk."
A Lifelong Issue?
Health authorities suggest the jabs for people with obesity-related medical conditions, alongside recommended lifestyle changes.
A number of clinicians say that, given the likelihood of weight regain, the treatment should be considered life-long.
This opinion is supported by pharmaceutical companies, who note that the findings "highlight the chronic character of excess weight," akin to managing conditions like high blood pressure.
User Experiences
Individuals who have come off the medication explain a powerful return of appetite.
"It was like something that goes on and you're instantly starving," said one woman.
The struggle is exacerbated if individuals have not established permanent lifestyle or habit modifications during treatment.
Growing Adoption
Figures indicate that millions of people in the UK have used these injections in the past year, with desire being substantial.
- Adoption is higher among females compared to men.
- The middle-aged demographic shows the greatest usage rates.
- A large proportion obtain the medications through private prescriptions rather than public health services.
In conclusion, experts emphasize that while these medications are potent tools for weight loss, they are not a permanent cure and maintained weight loss likely depends on ongoing behavioural management.
