What do withdrawal trials show about weight regain?
Weight regain was common after treatment stopped in major semaglutide and tirzepatide withdrawal studies. The amount varied, and their group averages cannot predict what will happen to one person.
In the STEP 1 semaglutide extension, an exploratory follow-up included 327 adults with overweight or obesity and without diabetes. After 68 weeks of weekly semaglutide 2.4 mg or placebo, both medication and lifestyle support ended. Over the following year, the former semaglutide group regained about two-thirds of its prior weight loss, on average. This design cannot separate the effects of stopping medication from those of ending structured support.
In SURMOUNT-4, adults with obesity or overweight with a weight-related complication, without diabetes, first received tirzepatide for 36 weeks. The 670 participants who reached randomization then continued their maximum tolerated 10 or 15 mg weekly dose or switched to placebo for 52 weeks. Both groups continued lifestyle counseling. From randomization, average weight increased 14.0% in the placebo group and fell a further 5.5% in the continued-treatment group. These percentages use weight at randomization, not the amount previously lost.
SURMOUNT-4 randomized people who completed its treatment lead-in, rather than everyone who might start the medicine. Neither study is a personal forecast or a reason to change a prescription yourself. Tirzepatide also acts on GIP receptors; its results should not be assumed to describe every GLP-1 medicine.
Does appetite return on a predictable schedule?
The withdrawal results above describe weight changes over months. They do not establish a timetable for your hunger, fullness or portion sizes, and regain alone cannot tell you exactly how appetite changed.
Some weight-management medicines help people feel less hungry or full sooner, as NIDDK explains. If those experiences change during a treatment transition, bring them to the prescribing team. Your appetite, food intake and health need individual review.
Can a food record prevent weight regain?
The two withdrawal studies cited here did not test whether FuelForm or keeping a food log prevents regain. Their results cannot establish that tracking changes the outcome after stopping medication.
A record can still be useful information for a follow-up conversation. It can show the foods, portions and meal patterns you entered, alongside notes about appetite, symptoms or changes in routine. It does not measure muscle loss, establish nutritional adequacy or prove your true maintenance intake. Unrecorded meals and uncertain portions remain gaps in the information.
If logging is useful to you, our guide to logging food explains how to record known quantities and review an estimate. Use the record to discuss your plan rather than automatically cutting food when a number changes.
What should you discuss before a treatment change?
NIDDK describes medication choice and duration as decisions made with a health professional; some people may be advised to remain on treatment long-term. These studies do not supply a tapering or stopping schedule.
Useful questions for an appointment include:
- What is the plan for the medicine and follow-up? Discuss the reason for the proposed change, available options and who to contact if cost, access or side effects are making the current plan difficult.
- What nutrition guidance fits my health? Ask about adequate intake and any necessary restrictions. Our protein and fibre guide explains why a general range needs individual review.
- What activity is suitable for me? Ask about an activity plan that fits your health, abilities and preferences.
- What should prompt a review? Agree which symptoms, appetite changes or weight trends matter in your situation, when to make contact and how to respond.
Which everyday routines are useful to review?
Choose practical steps that fit the plan you agreed with your care team:
- Package information: reading Nutrition Facts labels can help you compare products and match a serving to the amount eaten.
- Changing schedules: the weekend guide discusses keeping a record when social meals and routines differ.
- Meals near activity: the workout-food guide covers flexible options rather than a compulsory eating window.
- Other changes to mention: if sleep or your routine has changed, note it for your appointment. The sleep guide discusses the evidence and its limits; a log does not diagnose a cause of weight change.
These are ways to organize information and daily choices, not substitutes for treatment or guarantees against regain.
Related reading: Protein and fibre during GLP-1 treatment · Setting up protein-first tracking in FuelForm
Common questions
Does appetite come back after stopping a GLP-1?
Hunger or fullness may change during a treatment transition, but the withdrawal trials described here do not give a personal appetite timetable. They document average weight changes over months. Discuss what to monitor and when to contact your prescribing team rather than assuming a fixed return to a previous portion size.
Will you regain the weight after stopping a GLP-1?
Average regain occurred in the semaglutide and tirzepatide studies above, under different treatment and lifestyle-support conditions. Those results cannot predict an individual's outcome. They also do not show that a particular food-logging strategy prevents regain.
What should you do before coming off a GLP-1?
Discuss any treatment change with your prescriber, including medication options, nutrition needs, suitable activity and follow-up. Agree which changes should prompt contact. A food record can support that conversation, but cannot determine a dose change or guarantee weight maintenance.
