The three things behind “Ozempic butt”
Lumping them together is what makes it confusing. Separate them and it's clear what you can change and what you can't.
1. Lost subcutaneous fat (the intended effect)
The buttocks and hips hold a lot of subcutaneous fat, so when you lose weight, that area shrinks — often noticeably. This is the same mechanism behind “Ozempic face”: fat leaves fat-rich areas and the tissue that sat on top of it deflates. This part is the drug doing its job; it only “reverses” by regaining fat, which isn't the goal.
2. Some lost muscle (the preventable part)
Some lean-mass loss accompanies almost any large, rapid weight loss — GLP-1 or not. In the STEP 1 semaglutide trial's DXA substudy, total lean mass fell about 9.7% while fat mass fell much more, so the proportion of lean mass to body weight actually rose (New England Journal of Medicine, 2021). Across trials, roughly 25-45% of the total weight lost comes from lean mass, with semaglutide (STEP 1) at the higher end (~40-45%) and tirzepatide (SURMOUNT-1) lower (~26%) (Neeland et al., Diabetes Obesity and Metabolism, 2024; Circulation, 2024). These come from separate trialswith different populations and methods — not a head-to-head comparison, so they don't establish that one drug preserves muscle better. One important nuance: DXA “lean mass” also counts water, organs, and bone, so it overstates true muscle loss. Still, the glutes are a large muscle group, so under-fed, sedentary weight loss can leave them visibly softer. This is the part you can most influence — see our full GLP-1 and muscle loss guide for the trial-by-trial data.
3. Skin laxity (partly out of your control)
When fat leaves faster than skin can remodel, the skin over the buttocks and thighs can look loose or crepey. How much depends on how large and how fast the loss was, your age, sun history, and genetics (Cleveland Clinic, 2024). Mild laxity can improve slowly as skin remodels over months to a year or two; significant excess skin after very large weight loss often does not fully retract on its own.
What actually helps (evidence-based)
Train the glutes and legs 2-3× a week
Resistance training is the best-supported way to preserve — and rebuild — lean mass during weight loss. Compound lower-body work (squats, hip thrusts, lunges, deadlifts as able) directly targets the muscles that give the area shape (ISSN Position Stand, 2017).
Get enough protein
Clinical-nutrition guidance supports roughly 1.2-1.6 g/kg/day for adults losing weight, moving toward 1.4-2.0 g/kg/day for those doing resistance training (ISSN Position Stand, 2017). On a suppressed appetite this takes intention — prioritize protein at each meal. See our nutrition guide for practical targets.
Don't crash — a steadier pace protects tissue
Faster weight loss tends to take more lean mass and gives skin less time to adapt. A gradual, clinician-guided titration (roughly 1-2 lb/week for most people) is gentler on both muscle and skin.
For skin laxity that genuinely bothers you after a large loss, a board-certified dermatologist or plastic surgeon can assess options honestly. What doesn'twork: creams, “butt-lift” supplements, or waist trainers marketed to “fix Ozempic butt” — there's no evidence they tighten skin or rebuild muscle. And be cautious of clinics that jump straight to a Brazilian butt lift (BBL) or filler: BBL carries one of the highest complication rates in cosmetic surgery, and neither addresses the muscle you can rebuild yourself (American Society of Plastic Surgeons).
Tell your prescriber if you're losing more than ~1-2 lb/week, feel weaker, or are worried about muscle — the pace and your protein can be adjusted, and a dietitian or physical therapist can help. This page is educational, not medical advice.