What are the symptoms of hypoglycemia?

Written by Li Hui Zhi
Endocrinology
Updated on September 17, 2024
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Hypoglycemia, in fact, is diagnosed in healthy individuals when blood glucose levels are less than or equal to 2.8 mmol/L, and in diabetic patients when levels are less than or equal to 3.9 mmol/L. Common symptoms of mild hypoglycemia typically involve sympathetic nervous system activation, such as dizziness, palpitations, cold sweats, trembling hands, and a feeling of hunger. It is recommended that food be consumed promptly when these symptoms occur. If hypoglycemia is not immediately addressed, severe outcomes can occur, including altered mental status, coma, and unresponsiveness. In some cases, hypoglycemia may trigger seizures or abnormal cerebral vascular accidents, such as stroke or cardiac ischemia, leading to a heart attack. Therefore, preventing hypoglycemia is of utmost importance.

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Can people with hypoglycemia eat meat?

Hypoglycemia refers to a condition where the concentration of glucose in the plasma is too low, below 2.8mmol/L, which is termed hypoglycemia. During hypoglycemia, it is first necessary to quickly replenish glucose to increase the concentration of glucose in the blood and alleviate the symptoms of hypoglycemia. During hypoglycemia, it is best to first eat sugary foods, such as sugar water, chocolate, cookies, fruit juice, etc., which can quickly increase low blood sugar. Eating meat can also improve symptoms of hypoglycemia, but since meat takes longer to be digested and converted into blood glucose by the stomach, it does not quickly relieve symptoms of hypoglycemia. It is best to eat sugar during hypoglycemia, although meat can also be consumed.

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Standard for Low Blood Sugar

Our diagnostic criteria for hypoglycemia are often based on the "Whipple's triad," which is determined first by the presence of symptoms of hypoglycemia, such as palpitations, dizziness, pale complexion, cold sweats, confusion, mental abnormalities, and so on. Second, after the symptoms appear, we measure blood glucose; in non-diabetic patients, blood glucose below 2.8 mmol/L, and in diabetic patients, blood glucose below 3.9 mmol/L, then it can be judged as possibly hypoglycemia. Third, after measuring blood glucose, we quickly provide sugars, administer oral sugar water, biscuits, etc., and his symptoms of hypoglycemia quickly alleviate. Based on these three points, we can diagnose hypoglycemia.

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What is hypoglycemia?

Hypoglycemia is a condition characterized by abnormally low plasma glucose levels, caused by various etiologies, and clinically presents as a syndrome mainly featuring sympathetic nervous excitement and brain cell glucose deficiency. For healthy individuals, hypoglycemia is diagnosed when blood glucose levels fall below 2.8 mmol/L. For diabetic patients, hypoglycemia is diagnosed when blood glucose levels are below 3.8 mmol/L. Hypoglycemia can be categorized into fasting hypoglycemia and postprandial hypoglycemia based on its causes. Common symptoms of hypoglycemia include palpitations, fatigue, trembling hands, accelerated heart rate, sweating, mental distraction, dizziness, drowsiness, unstable gait, irritability, and even odd behaviors. In severe cases, it can lead to coma or even death.

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What to do about hypoglycemia?

After a hypoglycemic episode, we need to handle it quickly. Usually, based on symptoms of hypoglycemia, such as dizziness, palpitations, cold sweats, pale complexion, and trembling hands, we can preliminarily judge the likelihood of a hypoglycemic attack. Then, use a rapid glucose meter to measure fingertip blood sugar levels. For non-diabetic patients, a blood sugar level below 2.8 mmol/L and for diabetic patients, a level below 3.9 mmol/L can be indicative. Next, we quickly provide sugar, offering oral sugar water, sugary drinks, or sugar-containing fruits, cookies, bread, etc. After these treatments, the symptoms of hypoglycemia can be quickly alleviated.

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How to treat hypoglycemia?

First, we need to accurately identify what hypoglycemia is. We often judge the occurrence of hypoglycemia based on symptoms, such as common symptoms including palpitations, dizziness, pale complexion, general weakness, trembling limbs, sweating, etc. When these symptoms appear, we should immediately use a rapid glucose meter to measure the fingertip blood sugar. If the blood sugar is below 2.8, then the diagnosis of hypoglycemia is confirmed. We immediately provide sugary drinks or other forms of energy substances, and the symptoms of low blood sugar can be greatly relieved.