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Short, plain-language explainers on glucose, CGM data and the everyday things that move them. Every page lists its sources. They explain; they are not medical advice, and Dia never tells anyone what to dose.
Your CGM numbers
What the figures on a CGM report mean, and why they can disagree.
- Your CGM numbers
GMI vs. A1C: Why Your CGM Estimate and Lab Result Can Differ
GMI estimates A1C from your CGM’s average glucose. Learn the formula, and why GMI and a lab A1C can disagree even when both are accurate.
2 min read - Your CGM numbers
Why Doesn’t My CGM Match My Finger-Stick? Sensor Lag Explained
A CGM reads glucose in the fluid between cells, which trails your blood. Learn why CGM and meter numbers differ, and when the gap is largest.
2 min read - Your CGM numbers
What Is Glucose Variability? Understanding %CV on a CGM
Glucose variability is how much your glucose swings, usually shown as %CV. The 2019 consensus target is 36% or less. Here is what it means and doesn’t.
2 min read
What moves your glucose
Sleep, stress, heat, exercise and the early-morning rise.
- What moves your glucose
Why Is My Blood Sugar High in the Morning? The Dawn Phenomenon
A rise in blood sugar between about 4 and 8 a.m. is called the dawn phenomenon. Here is what may cause it and how overnight data helps tell it apart.
2 min read - What moves your glucose
Can Stress Raise Your Blood Sugar? What Is Going On
Yes: stress hormones like adrenaline tell the liver to release glucose. Here is how stress, hard exercise and low glucose can look alike in your data.
1 min read - What moves your glucose
Does Hot Weather Affect Blood Sugar and Insulin?
The CDC says high temperatures can change how your body uses insulin. See what heat does to glucose, hydration and your diabetes supplies.
2 min read - What moves your glucose
Why Did My Blood Sugar Go Up After Exercise?
Most aerobic exercise lowers glucose, but sprints, heavy lifting and competition can raise it through adrenaline. See what the ADA says and why timing matters.
2 min read - What moves your glucose
Does Poor Sleep Raise Your Blood Sugar?
Short or broken sleep is linked to higher glucose and lower insulin sensitivity. See what NIDDK and a CGM study in type 1 found, and what they can’t show.
2 min read
See your own glucose in plain words.
Notify me on November 14Dia explains; it doesn’t advise. Educational, not medical advice. Medical disclaimer