what does high fasting blood sugar mean
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Community Answer
Answered by Dr. Emily Carter, MD
High fasting blood sugar, also known as impaired fasting glucose (IFG), indicates that your blood sugar levels are higher than normal after an overnight fast (typically 8-12 hours without eating). This condition can be a sign of prediabetes or diabetes. Here’s what the ranges mean:
- Normal: Below 100 mg/dL
- Prediabetes (Impaired Fasting Glucose): 100–125 mg/dL
- Diabetes: 126 mg/dL or higher on two separate tests
High fasting blood sugar may result from:
- Insulin resistance
- Insufficient insulin production
- Poor diet or lifestyle habits
- Certain medical conditions or medications
If your fasting blood sugar is consistently high, it’s important to consult a healthcare provider for further evaluation and management.