Community Answer

Answered by Dr. Emily Carter, MD

A safe blood sugar level depends on the context, such as whether you are fasting, have eaten recently, or have diabetes. Here are general guidelines:

  • Fasting Blood Sugar (before meals):

    • Normal: 70–99 mg/dL
    • Prediabetes: 100–125 mg/dL
    • Diabetes: 126 mg/dL or higher
  • Postprandial (2 hours after eating):

    • Normal: Less than 140 mg/dL
    • Prediabetes: 140–199 mg/dL
    • Diabetes: 200 mg/dL or higher
  • A1C Levels (average over 3 months):

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

For people with diabetes, the target A1C level is typically below 7%, but this may vary based on individual health conditions and doctor recommendations. Always consult your healthcare provider for personalized targets.

Last updated: 1/12/2025

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