Community Answer

Answered by Dr. Emily Carter, MD

A high Hemoglobin A1C (HbA1c) level indicates that your average blood sugar levels have been elevated over the past 2-3 months. Here’s what the ranges typically mean:

  • Normal: Below 5.7%
  • Prediabetes: 5.7% to 6.4%
  • Diabetes: 6.5% or above

A high HbA1c suggests that your blood sugar is not well-controlled, which can increase the risk of diabetes-related complications such as:

  • Heart disease
  • Kidney damage
  • Nerve damage
  • Vision problems

If your HbA1c is high, it’s important to work with your healthcare provider to adjust your diabetes management plan, which may include lifestyle changes, medication, or both.

Last updated: 12/18/2024

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