Weight-loss medications such as semaglutide and tirzepatide, commonly known as GLP-1s, have changed how obesity is treated. They can support meaningful weight loss while improving blood sugar, blood pressure and cholesterol.
But what happens when you stop taking them?
A large research review found that many people regain weight after stopping weight-loss medication. Blood sugar, blood pressure and cholesterol may also begin to rise again. This does not mean the medication failed. It means obesity often needs ongoing care, much like diabetes or high blood pressure.
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Weight-loss medications may be prescribed to help people with overweight or obesity manage their weight and related health risks.
Newer medications such as semaglutide and tirzepatide work by copying hormones that help control hunger, fullness and blood sugar. They are often used along with healthy eating, physical activity and ongoing medical care.
These medications are sold under several brand names. Your health care provider can explain how your medication works and how long you may need to take it.
A 2026 review published in The BMJ looked at 37 studies involving more than 9,300 people. Researchers studied what happened after participants stopped taking weight-loss medication.
On average:
Researchers saw a similar pattern with newer medications such as semaglutide and tirzepatide. However, long-term research on these medications is still limited.
Weight regain is not simply about willpower.
Obesity is a complex, chronic disease. It can be affected by genetics, hormones, metabolism, medications, sleep, stress and a person’s environment.
Weight-loss medications can help reduce hunger, improve fullness and change how the body responds to food. When treatment stops, hunger and food cravings may return. The body may also try to regain lost weight by slowing metabolism and increasing appetite.
This response is biological—not a personal failure.
There is no single answer for everyone.
Some people may benefit from taking medication long term. Others may need to stop or change treatment because of side effects, cost, insurance coverage, pregnancy plans or changes in their health.
How long you take medication may depend on:
Your health care provider can help you weigh the benefits and risks and decide what is right for you.
Do not stop or change a prescribed medication without talking with your health care provider. Together, you can create a plan that supports your health during and after the change.
Your plan may include:
These steps cannot guarantee that you will keep all the weight off. However, they can provide support and help your care team respond if your health needs change.
Talk with your health care provider before stopping or changing weight-loss medication. Your provider can help you understand what to expect and create a plan based on your health, medication and goals.
Weight regain after stopping medication is common. It does not mean you failed or that the medication did not work. Ongoing care can help you protect your progress and support your long-term health.
