Blood Sugar Danger Levels

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Anything too far outside the normal range of 70 to 120 in a blood glucose test is considered a dangerous blood sugar level.

Diabetic blood level items
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Also known as hyperglycemia, high blood sugar levels are typically about 240 milligrams/deciliters. Any level above this can become dangerous.

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Low blood sugar is known as hypoglycemia and is generally anything less than 70 milligrams/deciliters.

Woman testing blood sugar levels
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Oftentimes, hyperglycemia has no symptoms, but if they do occur, they are most commonly blurry vision, frequent urination, fatigue, persistent thirst and wounds that are slow to heal.

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Most people with low blood sugar experience shaking, nausea and feeling unusually weak and drowsy. With severely low blood sugar, fainting and seizures can occur.

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Blood sugar problems can be prevented by maintaining a healthy diet and getting an acceptable level of physical exercise.

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