Q:

What is the range for low blood sugar?

A:

Quick Answer

Low blood sugar is any glucose reading below 70 milligrams per deciliter, according to Healthline. Hypoglycemia is caused by missing meals and snacks, taking too much insulin or increasing physical activity. It requires immediate treatment to avoid a loss of body functions.

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Full Answer

When glucose levels drop, the brain no longer receives the energy it requires. This lack of energy causes lethargy, the inability to think clearly and irritability. Loss of consciousness occurs if hypoglycemia goes untreated. Other symptoms include sweaty skin, extreme hunger, blurry vision and headaches.

Hypoglycemia is treated by eating 15 grams of carbohydrates. If levels are low after 15 minutes, another 15 grams is given. This is repeated until glucose levels rise to an acceptable level.

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