InBody
Also called: InBody scan, body composition analyzer
What it means
InBody is a body composition analyzer that uses a painless electrical current (bioelectrical impedance) to estimate your muscle (lean mass), fat, and water. It does not measure bone density directly.
Muscle mass and strength are closely tied to fall risk and fracture risk, so tracking lean mass helps fill in the picture alongside your bone density scan.
An InBody scan is a quick, non-invasive test where you stand on metal plates (or hold handles) while a very mild electrical current passes through your body. Different tissues conduct electricity differently, which lets the device estimate how much of you is muscle, fat, and water. It's the same general technology as some bathroom "smart scales," just more detailed.
This is different from a DEXA scan, which uses low-dose X-rays to measure bone mineral density. InBody doesn't tell you about bone strength at all — instead it tracks lean mass (a stand-in for muscle), which matters because muscle and strength changes show up faster than bone density changes, and weaker muscles are linked to higher fall risk.
Because bone density moves slowly, some clinics use tools like InBody alongside strength and balance testing to get a fuller, faster-moving picture of your musculoskeletal health between DEXA scans. It's one piece of a bigger puzzle, not a replacement for a bone density scan, and it doesn't diagnose or treat osteoporosis on its own.
InBody measures muscle, fat, and water with a painless current, but it does not measure bone density.
Where this leads
WordInBody tracks your lean mass alongside bone density. Curious why muscle weight specifically matters so much for strength and fall risk?
Where the Academy teaches it
This page is the short version. The lessons teach it in full, with the context around it and a quiz to lock it in.
Related words
Lean mass is mostly your muscle weight — the non-fat part of your body. It's tracked because it's closely linked to…
A DEXA scan is a low-radiation X-ray test that measures how much mineral is in your hip and spine bones, giving you…
Sarcopenia is the gradual loss of muscle mass and strength that comes with aging, and it's closely tied to bone health.
Fall risk is how likely you are to fall, and it matters because falling—not just weak bones—is the most common cause…
Grip strength is how hard you can squeeze with your hand, measured with a device called a dynamometer. It's used as…
Body composition is the breakdown of your body into fat mass, lean (muscle) mass, and bone, usually measured by a…
Education only, not medical advice. Decisions about tests, medications and treatment belong with your own doctor. OsteoStrong does not diagnose, treat or cure any disease.
