Fresh analysis suggests that patients who discontinue blockbuster weight-loss injections like Wegovy and Mounjaro can put back on reduced body mass far faster than those who end traditional lifestyle programs.
Published data in a major health publication shows that while obese individuals can lose about a fifth of their body weight while undergoing treatment, the weight comes back at an estimated rate of nearly a kilo each month after stopping.
"Users buying such drugs need to be informed of the danger of quick weight regain when the medication is stopped," cautioned lead investigator Dr. Susan Jebb.
This pace of recovery implies a reversion to pre-treatment weight in about one and a half years.
Comparing Therapies
The analysis, which looked at dozens of studies involving thousands of patients, compared the outcomes of these new drugs with conventional dieting.
The team note that people who lose weight through diet and exercise generally experience a slower weight regain—approximately 0.1 kg a month—after stopping.
Explaining the Quick Rebound
Doctors propose the mechanism of the jabs explains the accelerated regain.
These medications copy a body's own chemical called GLP-1, which helps regulate appetite.
"Artificially providing GLP-1 concentrations several times higher than normal might result in the body to produce less of its endogenous GLP-1, and may also reduce sensitivity to its actions," said Dr. Adam Collins, a dietetics specialist.
"Withdrawal of this hormone supplement results in appetite is unsuppressed, making excessive eating much more probable."
A Lifelong Condition?
The NHS recommend the injections for people with weight-linked medical conditions, accompanied by recommended diet and exercise modifications.
Many experts say that, given the high risk of weight regain, the treatment is often ongoing.
This opinion is echoed by pharmaceutical companies, who note that the findings "emphasize the persistent nature of obesity," comparing it to managing diseases like hypertension.
Patient Experiences
People who have stopped the medication describe a powerful resurgence of hunger.
"I experienced a trigger that goes on and you're instantly starving," described an individual.
This difficulty is exacerbated if users have not established permanent lifestyle or habit changes during therapy.
Growing Adoption
Survey data suggest that a significant number of people in the UK have used weight-loss jabs in the past year, with demand continuing to grow.
- Adoption is higher among women than men.
- The 40s and 50s age group shows the greatest usage rates.
- Many obtain the medications through private prescriptions rather than public health services.
In conclusion, clinicians caution that while the jabs are effective tools for shedding pounds, they are not a standalone solution and lasting health benefits relies on ongoing behavioural changes.
