what is the good glucose levels

Normal blood glucose levels vary depending on whether you are fasting or have recently eaten. Here are the general guidelines:

• Fasting Blood Sugar (before eating): 70–99 mg/dL (3.9–5.5 mmol/L)
• Postprandial (2 hours after eating): Less than 140 mg/dL (7.8 mmol/L)
• A1C (average over 2-3 months): Below 5.7%

Blood Sugar Levels for Diabetes Diagnosis:

• Prediabetes:
  • Fasting: 100–125 mg/dL (5.6–6.9 mmol/L)
  • A1C: 5.7%–6.4%
• Diabetes:
  • Fasting: 126 mg/dL (7.0 mmol/L) or higher
  • A1C: 6.5% or higher

Maintaining blood sugar within these ranges is crucial for preventing complications. Always consult your healthcare provider for personalized targets.