Tracking
Standard bathroom scales can't tell you what you most need to know on GLP-1 therapy: how much of your weight loss is fat versus lean muscle. Body composition scales using bioelectrical impedance (BIA) give you this critical data at home. They're not perfectly accurate, but consistent measurements with the same device show meaningful trends.
How we chose these products
Every product in this category is assigned an evidence tier — Strong, Moderate, or Emerging— based on the clinical research behind the key ingredient category. Products labeled “GLP-1 Specifically Labeled” are formulated or marketed directly for GLP-1 medication users.
Our composite score weights evidence tier, Amazon rating, and review volume. Products are sorted by composite score by default. We earn affiliate commissions on purchases, which does not influence our ratings.
What to look for
Look for scales with multi-frequency BIA (bioelectrical impedance analysis) rather than single-frequency. Multi-frequency devices measure impedance at multiple frequencies, providing more accurate segmental body composition data — particularly important for tracking lean mass changes.
Consistency matters more than absolute accuracy with BIA scales. Measure at the same time of day (morning, after using the bathroom, before eating), under the same conditions. The trend over weeks and months is far more meaningful than any single reading.
Scales that sync to an app with trend tracking are significantly more useful than ones that just display numbers. Being able to see your muscle percentage trend over 3 months is the most valuable data point for GLP-1 users.
Top picks — 11 products
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Frequently asked questions
Why can't I just use a regular scale on Ozempic?
Regular scales show total weight change but can't distinguish between fat loss and muscle loss. On GLP-1 medications, without deliberate intervention, 25–60% of weight lost can be lean muscle. If you're losing weight but destroying your muscle mass in the process, a regular scale will show 'progress' while the underlying body composition outcome is poor.
How accurate are body composition scales for GLP-1 users?
BIA body composition scales have an accuracy range of ±3–5% compared to clinical gold standards (DEXA scan). They're not medical-grade devices. However, when used consistently under the same conditions, they reliably detect trends — and for GLP-1 users, it's the trend (is my muscle percentage going up or down?) that matters.
How often should I weigh myself on GLP-1 therapy?
Daily weighing is associated with better weight management outcomes in research, provided you interpret fluctuations correctly (hydration, food volume, etc.). For body composition specifically, weekly or bi-weekly measurements under consistent conditions are sufficient and avoid the noise of daily variation.
What's a good target body fat percentage for GLP-1 users?
Rather than targeting a specific body fat percentage, the more important goal for GLP-1 users is maintaining or improving their muscle mass percentage as total weight decreases. A successful outcome looks like: total weight down + body fat % down + muscle mass % maintained or increased.