How is hypoglycemia treated?

Written by Zhao Xin Lan
Endocrinology
Updated on March 13, 2025
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For mild hypoglycemia, if the patient is conscious, they can self-treat by orally consuming sugary solutions or foods containing carbohydrates, such as beverages, fruit juices, glucose water, candies, etc. In cases of more severe hypoglycemia accompanied by changes in consciousness, oral sugar intake is not advisable. Instead, intravenous glucose injections should be administered to raise blood sugar levels, typically using about 40-100 ml of 50% concentrated glucose. Blood sugar levels should be monitored repeatedly. If the patient does not regain consciousness, repeated glucose injections may be necessary. For severe cases with other organic pathologies, treatment with corticosteroids may be required, and emergency hospital treatment is necessary.

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Written by Luo Han Ying
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Is hypoglycemia dangerous?

For diabetic patients, hypoglycemia is defined as glucose levels less than 4 mmol/L, and for non-diabetic individuals, or healthy people, low blood sugar is characterized by levels less than 2.8 mmol/L. Hypoglycemia initially causes metabolic abnormalities in the brain since brain cells in the middle of the brain can't break down fats or proteins; they can only use the simplest sugars, which is the glucose in our blood, as their energy source. When the concentration of sugar in the blood decreases, the brain cells fail to absorb enough energy, which can lead to abnormalities in brain function, resulting in symptoms like fatigue and drowsiness. If glucose is not consumed at this point, the further deficiency in energy for brain cells may lead to coma, making hypoglycemia a very dangerous condition.

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Endocrinology
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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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Written by Lin Xiang Dong
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Hypoglycemia complications

Complications of hypoglycemia encompass aspects of both the central nervous system and the heart. Firstly, the central nervous system, due to hypoglycemic episodes, can lead to brain cells lacking energy, which may then cause cerebral edema. This results in severe neuroglycopenic syndrome. Common symptoms include confusion, apathy, and abnormal mental and behavioral actions. If hypoglycemia persists or recurs, it can lead to coma and death. Secondly, cardiac complications arise during hypoglycemic episodes because excitement of the sympathetic nervous system leads to an increased heart rate or sinus tachycardia. Very few patients may experience bradycardia. Additionally, other arrhythmias, including premature atrial contractions, supraventricular tachycardia, ventricular premature beats, and short episodes of ventricular tachycardia, can occur.

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Written by Luo Juan
Endocrinology
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Does low blood sugar cause confusion?

When hypoglycemia occurs, it is possible to experience confusion. This is because, under normal conditions, the glucose level in our brain tissue is only about 25% of that in our blood. After hypoglycemia occurs, the glucose concentration in our brain tissue will further decrease, leading to a state of sugar and oxygen deprivation in the brain. Severe cases can exhibit a range of neuropsychiatric symptoms such as behavioral changes and confusion, cognitive dysfunction, or even epileptic seizures. Some patients may also experience coma and permanent brain damage, typically seen in those with severe and prolonged hypoglycemia. Similarly, patients who repeatedly experience hypoglycemia often also suffer from brain atrophy. Therefore, confusion can occur during hypoglycemia.

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Written by Lin Xiang Dong
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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.