HbA1c 5.9% — what does it mean?
Three-month average blood sugar (HbA1c)
- What most labs call normal
- under 5.7%
- Where you actually want to sit
- under 5.2%
What this test is
Your average blood sugar over the past three months, boiled down to a single number.
What your number means
Under 5.2 is the target. 5.7 to 6.4 is what doctors call pre-diabetes. The part that gets missed is the stretch in between — 5.3 to 5.6 is printed as normal but is already doing quiet damage to the tissue your cells live in. Every half point up counts.
Why it matters
Steady blood sugar keeps the proteins around your cells supple; high sugar slowly caramelises and stiffens them.
When blood sugar runs high for months, sugar sticks to nearby proteins and ‘caramelises’ them — like sugar hardening in a hot pan. That sticky, stiff build-up degrades the neighbourhood your cells depend on.
What to do about it
Walking after meals, cutting sugary drinks and refined carbs, strength work and decent sleep all pull this down. It moves slowly by design, so retest after three months.
Where it sits in your Body Age
HbA1c is one of the tests behind Hidden Inflammation — How much quiet, low-grade inflammation is wearing your body down in the background. It is one of four areas that together give a single number: the age your body reads, next to the age on your birth certificate.
This page explains what a blood test measures. It is not a medical diagnosis and cannot tell you what your own result means for you — take that to a doctor.