What Are Considered Normal Blood Sugar Levels?


Quick Answer

A normal fasting blood glucose level is 100 milligrams per deciliter or less, reports WebMD. Two hours after eating, a normal blood glucose level for people 50 or younger is 140 milligrams per deciliter. Hypoglycemia and hyperglycemia are the technical terms for low and high blood sugar levels, according to the American Heart Association.

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What Are Considered Normal Blood Sugar Levels?
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Full Answer

The American Heart Association states that blood sugar levels below 70 milliliters per deciliter of blood are classified as hypoglycemia. High blood sugar levels are anything over 240 milliliters per deciliter of blood, according to WebMD. While hypoglycemia can come on quickly within a few hours, hyperglycemia usually comes on slowly over a period of time.

For people ages 50 to 60, a normal fasting blood glucose range is less than 150 milligrams per deciliter, and it is less than 160 milligrams per deciliter for people over 60. Random blood glucose levels vary based on how much and when the individual last ate, according to WebMD. For most people, a blood glucose level of 80 to 120 milligrams per deciliter before meals or upon first awakening is normal. A random blood glucose level before bedtime is between 100 and 140 milligrams per deciliter.

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