Continuous Glucose Monitor (CGM)
A wearable glucose sensor that estimates glucose every few minutes and tracks the pattern over time.
Plain English
A CGM shows the movie of glucose, not one snapshot.
Why It Matters After 40
It can show how meals, sleep, exercise, stress, and medication timing affect glucose patterns across the day.
What To Do With It
Use it for trend conversations and behavior experiments. Confirm treatment decisions with a diabetes clinician.
Human Utility
- Know what the term means before uploading data into an AI tool.
- Separate explanation from medical interpretation.
- Bring trend data and context to the appointment instead of one isolated number.
Proof Structure
CGM tracks glucose over time
NIDDK describes CGMs as estimating glucose every few minutes and keeping track over time.
Source: NIDDK CGM