At What A1C Does Nerve Damage Actually Start?

If your A1C is 5.9 and your doctor told you you're fine, this video is for you. The standard cutoffs — 5.7 for pre-diabetes, 6.5 for diabetes — are administrative numbers, chosen for paperwork rather than biology. Nerve damage doesn't wait for a 6.5. It starts on the slope, and by the time the lab catches up, the small fibers in your feet have already been dying off for years. Dr. Fitz breaks down the research most patients never see: why roughly 1 in 8 pre-diabetic adults already has measurable nerve damage, and why the nerve test most doctors order can't even see this stage.