You can have prediabetes and not know it. Two tests are commonly used to diagnose prediabetes:
- Fasting blood glucose. Measures blood glucose first thing in the morning before you eat. A normal fasting blood glucose is between 70 to100 mg/dL (3.8 to 5.5 mmol). You have prediabetes if your fasting blood sugar is 101 to 125 mg/dL (5.6 to 6.9 mmol).
- Oral glucose tolerance test. Measures blood glucose after fasting and again 2 hours after drinking a glucose-rich drink. Normal blood glucose is below 140 mg/dL (7.7 mmol) 2 hours after the drink. In prediabetes, the 2-hour blood glucose is 140 to 199 mg/dL (7.8 to 11.0 mmol/L). If the 2-hour blood glucose rises to 200 mg/dL (11.1 mmol) or above, you have diabetes.
If you have prediabetes, you should do something about it. Studies have shown that people with prediabetes can prevent or delay the development of type 2 diabetes by up to 58 percent through changes to their lifestyle, including modest weight loss (as little as 5 to 7 percent of your current weight) and increasing physical exercise. That is huge!
Diabetes, Mayo Clinic citat
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