Diabetes
Fasting Blood Sugar: Normal Range and What High Sugar Means
Fasting blood sugar (glucose) is measured after not eating for 8–12 hours. It's a key screen for prediabetes and diabetes, which are very common in India.
Normal Fasting Blood Sugar range
What a high Fasting Blood Sugar means
A raised fasting sugar suggests your body isn't managing glucose well. Caught early (prediabetes), it can often be reversed with diet, activity and weight loss.
Common causes:
- Excess refined carbs and sugar
- Being overweight
- Low physical activity
- Family history
- Stress and poor sleep
What a low Fasting Blood Sugar means
Low blood sugar (hypoglycemia) can cause shakiness, sweating and dizziness and needs prompt attention, especially in people on diabetes medication.
Food & lifestyle that help
Favour
- Whole grains, millets and oats
- Dal, beans and vegetables
- Protein with meals
- Fruit in moderation (whole, not juiced)
Limit
- Sugar, sweets and sugary drinks
- White rice, maida and bakery items in excess
- Fried and packaged snacks
When to see a doctor
See a doctor if your fasting sugar is 100 mg/dL or higher, so it can be confirmed and managed early — prediabetes is often reversible.
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Make my free plan →Frequently asked questions
What is a normal fasting blood sugar?
Under 100 mg/dL is normal; 100–125 is prediabetes and 126 or higher (on repeat testing) indicates diabetes.
Can prediabetes be reversed?
Often yes. Weight loss, cutting sugar and refined carbs, and regular activity can return fasting sugar to normal for many people.