Guide · Progress
Getting past a weight-loss plateau on a GLP-1
The scale was moving, and now it isn’t. That’s frustrating, and also expected. Here’s why weight loss slows, how to tell a real plateau from normal swings, and what tends to help.
The short answer
Slowing down is part of the usual pattern. In the large trials, weight came off fastest in the first 6 months, then slowed, and leveled off at around 18 months.1 Judge progress by your weekly average over several weeks. Keep up strength training and protein, which protect muscle while the scale is slow.1 Questions about your medication go to your prescriber.
Why weight loss slows
Across the big GLP-1 trials, weight came off quickest in the first 6 months. After that it slowed, and it relatively leveled off around 18 months. When people stayed on the medicine, the weight loss held for at least 4 years in controlled and observational studies.1
People also respond very differently. Some lose very little and some lose 30% or more of their weight, so comparing your pace with someone else’s says little about how you’re doing.1 A smaller body also needs less energy, so the same habits that drove early losses tend to produce slower ones later.
Is it a real plateau?
Daily weight moves up and down with water, salt, and when you last ate or went to the bathroom. One heavy morning is noise. A plateau is when your weekly average has stayed flat for several weeks.
- Weigh in
- Same time, same conditions: for most people, in the morning before eating
- Compare
- This week’s 7-day average with last week’s, not today with yesterday
- Look back
- Several weeks of averages before calling it a plateau
- Look beyond the scale
- Strength, stamina, how clothes fit, and the habits you’ve kept
What tends to help
The joint advisory from four obesity and nutrition societies points to the same habits whether the scale is moving or not.1
Add or keep strength training
At least 3 times a week. It protects muscle, which matters more the longer weight loss goes on.
Move most days
At least 150 minutes a week of moderate activity like brisk walking, built up to what your body can do.
Check your protein
Small appetites make it easy to drift low. See getting enough protein on low-appetite days.
Look at what’s on the plate
Mostly minimally processed foods: vegetables, fruit, whole grains, beans, lean protein, nuts. Fewer refined carbs and sugary drinks.
Watch the drinks
Sugar-sweetened drinks and alcohol add up quickly and are easy to overlook.
Look at sleep and stress
Both are part of a full lifestyle plan, and a rough stretch with either can show up on the scale.
If you’re early in treatment, slower weeks are especially common; your first week on a GLP-1 covers what to expect at the start.
A plateau week with Aven
Aven reads your weigh-ins as a weekly trend, so Aven can tell a flat stretch from a bad morning and help you change one thing at a time.
Aven- Monday 7:20 AM
- 196.8. Same as 3 weeks ago. What is even the point
- I hear you. Your 7-day average has been flat for 3 weeks, so this is a real plateau, not just one morning. It’s also a common point to hit. Since you started you’re down 14 lbs and walking 4 days a week.
- Want to try one change for the next two weeks? Two short strength sessions, and protein at breakfast every day.
- Okay. Tuesday and Friday?
- Done. I’ll text Tuesday and Friday at 6 PM. And if you want to ask your prescriber about it, I’ll add it to your question list for your next visit.
Questions to bring to your prescriber
- My weekly average has been flat for several weeks. Is that expected at this point in my treatment?
- Is there anything about my medication plan we should look at?
- Is there anything else, like sleep, another medicine, or a health condition, that could be affecting my weight?
- Could a dietitian or an exercise program help me right now?
Don’t change or stop your medication on your own. Weight regain is common after stopping: up to two-thirds of the lost weight came back within a year in the studies the advisory reviewed.1
What Aven does, and doesn’t do
Aven does
- Track weigh-ins as a weekly trend
- Point out the progress beyond the scale
- Help you try one change at a time
- Keep your questions for your next visit
Aven doesn’t
- Tell you to change, skip, or stop your medication
- Give dose amounts or schedules
- Replace your prescriber or care team
Questions people ask
Is it normal to hit a plateau on a GLP-1?
Yes. In the large trials, weight came off fastest in the first 6 months, then slowed, and leveled off at around 18 months.1 Results also vary widely from person to person. A slower stretch is an expected part of the pattern, not a sign you did something wrong.
How do I know if it’s really a plateau?
Look at your weekly average over several weeks rather than single mornings. Day-to-day weight moves with water, salt, and when you last ate. If the weekly trend has been flat for a few weeks, that’s worth paying attention to.
What helps break a GLP-1 plateau?
The things that help most are the ones that protect your health while the scale is slow: strength training at least 3 times a week with at least 150 minutes of moderate aerobic activity, enough protein, and mostly minimally processed foods, with fewer refined carbs and sugary drinks.1 Bring questions about your medication to your prescriber.
Should I change my dose or stop my GLP-1 if I plateau?
That decision is for you and your prescriber, never something to change on your own. It helps to know that weight regain is common after stopping: up to two-thirds of the lost weight came back within a year in the studies the advisory reviewed.1
Sources
- Mozaffarian D, Agarwal M, Aggarwal M, et al. Nutritional priorities to support GLP-1 therapy for obesity: a joint Advisory from the American College of Lifestyle Medicine, the American Society for Nutrition, the Obesity Medicine Association, and The Obesity Society. Am J Clin Nutr. 2025;122(1):344-367. doi:10.1016/j.ajcnut.2025.04.023
This guide is general education, not medical advice. Research is cited as background on GLP-1 treatment, not as evidence about Aven. Aven is not affiliated with Novo Nordisk, Eli Lilly, or any drug manufacturer.