
Body composition
What Is a DEXA Scan and How Does It Measure Body Composition?
Two people can weigh the same and have completely different bodies. Here is how a DEXA scan tells them apart, in about seven minutes.
Clear, evidence-led guides on what we measure and why it matters. Written by the Prefusion team, built on what we see in clinic every day.


Two people can weigh the same and have completely different bodies. Here is how a DEXA scan tells them apart, in about seven minutes.

How GLP-1 therapy works, what the common side effects are, and why the scale is the wrong way to judge it.

Drip or pill? How the two compare on delivery, speed and personalization, and why your labs should decide.

Most plans start with a guess. Here is what DEXA, RMR, VO2 max and labs show, and why measuring first changes every decision.
New guides publish here every month.
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