how low is low blood sugar?
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Low blood sugar is called hypoglycemia. A blood sugar level below 70 mg/dL (3.9 mmol/L) is low and can harm you. A blood sugar level below 54 mg/dL (3.0 mmol/L) is a cause for immediate action.
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Such high levels tend to be uncommon in type 2 diabetes, though. Blood sugar concentrations below 3.3 mmol/L (60 mg/dL) are considered to be too low. As you can see in the illustration below, there are no clear-cut borders between the normal range of blood sugar and high and low blood sugar.
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Low blood sugar can happen in people with diabetes who take medications that increase insulin levels in the body. Taking too much medication, skipping meals, eating less than normal, or exercising more than usual can lead to low blood sugar for these individuals. Blood sugar is also known as glucose.
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For diabetics, normal blood sugar levels are considered between 80 to 130 mg/dL after fasting, and less than 180 mg/dL one to two hours after eating. For those without diabetes, normal blood sugar levels are considered between 70 to 99 mg/dL after fasting, and less than 140 after eating.
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Hypoglycemia is a condition in which your blood sugar (glucose) level is lower than normal. Glucose is your body's main energy source. Hypoglycemia is often related to diabetes treatment.
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However, even in people without diabetes, blood sugar levels can go up as high as 180 during or right after a meal. Within two hours after eating, blood sugar levels should drop to under 140. After several hours without eating, blood sugar can drop as low as 70.
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But too much insulin or other diabetes medications may cause your blood sugar level to drop too low, causing hypoglycemia. Hypoglycemia can also occur if you eat less than usual after taking diabetes medication, or if you exercise more than you normally do.
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Depending on whether blood sugar levels are measured on an empty stomach or after a meal, they vary between 3.3 and 7.8 mmol/L (about 60 and 140 mg/dL) in healthy people. There are no clear-cut boundaries between the normal range of blood sugar and high or low blood sugar.
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Because the symptoms of low blood sugar may persist until 30 minutes after treating, you should not drive or operate heavy machinery until 30 to 45 minutes after treating the low blood sugar. Also, make sure that your blood sugar is no longer low before engaging in the activities mentioned.
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The full name for a hypo is hypoglycaemia. It's when your blood glucose level (also called blood sugar) is too low, usually below 4mmol/l. Low blood sugar can happen if the balance of diabetes medication you take (especially insulin), food you eat and physical activity you do sometimes isn't right.
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People with hypoglycemic unawareness do not know their blood sugar is dropping. If you have this condition, your blood sugar can drop without you noticing it. Without immediate treatment, you can faint, experience a seizure, or even go into a coma. Very low blood sugar is a medical emergency.
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Regardless of when you last ate, a random blood sugar level of 200 milligrams per deciliter (mg/dL) — 11.1 millimoles per liter (mmol/L) — or higher suggests diabetes. Fasting blood sugar test. A blood sample will be taken after an overnight fast. A fasting blood sugar level less than 100 mg/dL (5.6 mmol/L) is normal.
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Hypoglycemia is the medical term for low blood sugar (low blood glucose). Your body, especially your brain, depends on this sugar to work. Too little sugar in your blood causes problems that can sometimes be serious. Hypoglycemia is common in people with type 1 diabetes (T1D).
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For most people without diabetes, blood sugar levels before meals hover around 70 to 80 mg/dL. For some people, 60 is normal; for others, 90 is the norm.
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Fluctuations in blood glucose can result in rapid mood changes, including low mood and irritability. This is especially true during hypoglycemic episodes, during which blood sugar levels drop below 70 milligrams per deciliter (mg/dL).
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Here are the normal blood sugar ranges for a person without diabetes according to the American Diabetes Association: Fasting blood sugar (in the morning, before eating): under 100 mg/dL. 1 hour after a meal: 90 to 130 mg/dL. 2 hours after a meal: 90 to 110 mg/dL.
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Hypoglycemia (Low Blood sugar) But if it goes below the healthy range and is not treated, it can get dangerous. Low blood sugar (also known as hypoglycemia) is when your blood sugar levels have fallen low enough that you need to take action to bring them back to your target range.