Community Answer

Answered by Dr. Emily Carter, MD

Blood sugar level, also known as blood glucose level, refers to the concentration of glucose in your blood. Glucose is a primary source of energy for your body's cells and is derived from the foods you eat. Maintaining a healthy blood sugar level is crucial for overall health, especially for individuals with diabetes or prediabetes.

Normal Blood Sugar Levels:

  • Fasting (before eating): 70–99 mg/dL
  • 2 hours after eating: Less than 140 mg/dL

Blood Sugar Levels in Diabetes:

  • Fasting (before eating): 126 mg/dL or higher indicates diabetes.
  • 2 hours after eating: 200 mg/dL or higher indicates diabetes.

Blood Sugar Levels in Prediabetes:

  • Fasting (before eating): 100–125 mg/dL
  • 2 hours after eating: 140–199 mg/dL

Regular monitoring of blood sugar levels is essential for managing diabetes and preventing complications. If you have concerns about your blood sugar levels, consult a healthcare professional for personalized advice.

Last updated: 1/12/2025

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