Fresh analysis indicates that patients who come off new weight-loss injections like Mounjaro or Wegovy may regain lost weight far faster than those who end conventional lifestyle programs.
Findings released in a leading medical journal demonstrates that while obese people can lose about a fifth of their body weight while undergoing treatment, the weight comes back at an average rate of 0.8 kg per month after stopping.
"Users buying these drugs should be aware of the potential of rapid rebound weight gain when the medication ends," cautioned expert Dr. Susan Jebb.
Such speed of recovery implies a return to pre-treatment weight within about 18 months.
Comparing Treatments
The research, which looked at 37 of trials involving thousands of participants, contrasted the results of these new drugs with other pills.
The team note that people who lose weight through dieting typically experience a slower weight regain—perhaps 0.1 kg a month—post-intervention.
Understanding the Rapid Rebound
Experts believe the way of the jabs explains the amplified rebound.
The injections imitate a natural hormone called GLP-1, which helps regulate hunger.
"Artificially providing GLP-1 concentrations far above than the body's typical production might result in the system to produce less of its own natural GLP-1, and may also reduce responsiveness to its effects," noted Dr. Adam Collins, a nutrition expert.
"Withdrawal of this hormone supplement means appetite is unsuppressed, making excessive eating far more likely."
An Ongoing Condition?
The NHS advise the injections for individuals with obesity-related health risks, accompanied by prescribed diet and exercise modifications.
A number of clinicians argue that, due to the likelihood of relapse, the therapy is often life-long.
This view is reinforced by drug manufacturers, who note that the findings "emphasize the chronic character of obesity," comparing it to managing diseases like diabetes.
Patient Experiences
Users who have stopped the jabs describe a powerful return of hunger.
"I experienced a switch that goes on and you're instantly ravenous," recalled one woman.
This challenge is exacerbated if individuals have not adopted lasting dietary or behavioural modifications during treatment.
Significant Interest
Recent estimates suggest that millions of people in the UK have used these injections in the past year, with interest continuing to grow.
- Adoption is greater among females than men.
- The 40s and 50s demographic shows the highest usage rates.
- Many access the drugs through private prescriptions rather than the NHS.
Ultimately, researchers emphasize that while these medications are effective tools for weight loss, they are not a standalone cure and maintained weight loss hinges on ongoing behavioural support.
