Patients Discontinuing Weight-Loss Medications Regain Pounds Far More Rapidly Than People Using Diet and Exercise

New research suggests that people who stop using new GLP-1 drugs like semaglutide or tirzepatide can put back on reduced body mass much more quickly than those who stop traditional diet and exercise plans.

Findings released in a prominent medical journal points out that while overweight people can lose about a fifth of their body weight while on the medication, the weight is regained at an estimated rate of nearly a kilo each month once they quit.

"Users buying these medications must be aware of the danger of quick rebound weight gain when the medication ends," stated expert Dr. Susan Jebb.

That rate of regain suggests a reversion to pre-treatment weight within about 18 months.

Comparing Treatments

The research, which examined 37 of trials involving over 9,000 of participants, compared the results of these new drugs with older methods.

Scientists emphasize that individuals who shed pounds through lifestyle changes alone typically experience a slower creep back—approximately 0.1 kg a month—once they finish.

The Reason for the Quick Regain

Experts suggest the mechanism of the jabs accounts for the amplified regain.

The injections imitate a body's own chemical called GLP-1, which controls hunger.

"Sustained high doses of GLP-1 levels far above than normal might result in the body to generate a reduced amount of its endogenous hormone, and may also reduce sensitivity to its actions," said Dr. Adam Collins, a nutrition researcher.

"Discontinuation of this GLP-1 'fix' results in hunger is no longer kept in check, making binge eating much more probable."

A Chronic Disease?

The NHS suggest the injections for individuals with weight-linked health risks, accompanied by prescribed lifestyle changes.

Many experts argue that, given the high risk of relapse, the treatment is often ongoing.

This perspective is echoed by pharmaceutical companies, who say that the findings "highlight the chronic nature of excess weight," similar to managing conditions like hypertension.

Patient Experiences

People who have come off the medication describe a intense return of cravings.

"It felt as if a trigger activating and I was suddenly ravenous," recalled a patient.

This challenge is worsened if patients have not developed permanent dietary or behavioural modifications during therapy.

Widespread Use

Survey data suggest that a significant number of people in the UK have used these injections in the last 12 months, with demand being substantial.

• Adoption is greater among women compared to men.
• The 40s and 50s demographic shows the highest level of interest.
• A large proportion access the medications through private prescriptions rather than the NHS.

Ultimately, experts caution that while GLP-1 drugs are effective tools for weight loss, they are not a permanent fix and long-term success relies on ongoing lifestyle management.