Normal blood sugar levels for most healthy individuals are generally:
- Fasting (before eating): between 4.0 to 5.4 mmol/L (72 to 99 mg/dL)
- Up to 7.8 mmol/L (140 mg/dL) 2 hours after eating
A healthy fasting blood glucose level is typically 70 to 99 mg/dL (3.9 to 5.5 mmol/L)
. For people without diabetes, blood sugar levels below 100 mg/dL after fasting are considered normal, while levels from 100 to 125 mg/dL may indicate prediabetes
. For people with diabetes, blood sugar targets vary but general guidelines from the American Diabetes Association include:
- Before meals: 80 to 130 mg/dL (4.4 to 7.2 mmol/L)
- 1 to 2 hours after meals: less than 180 mg/dL (10 mmol/L)
- At bedtime: 90 to 150 mg/dL (5.0 to 8.3 mmol/L)
Blood sugar targets should be individualized based on personal health conditions and discussed with a healthcare provider
. In summary:
Condition| Fasting Blood Sugar (mmol/L)| Fasting Blood Sugar (mg/dL)| Post-
Meal Blood Sugar (mmol/L)| Post-Meal Blood Sugar (mg/dL)
---|---|---|---|---
Healthy (no diabetes)| 4.0 – 5.4| 72 – 99| Up to 7.8| Up to 140
Prediabetes| 5.6 – 6.9| 100 – 125| 7.8 – 11.0| 140 – 199
Diabetes (target range)| 4.4 – 7.2| 80 – 130| Less than 10| Less than 180
These ranges provide guidance, but individual targets may vary
