Does low blood sugar cause confusion?

Written by Luo Juan
Endocrinology
Updated on October 21, 2024
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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 Zhao Xin Lan
Endocrinology
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Does hypoglycemia spread?

Hypoglycemia is not a contagious disease, so it is not transmittable. Hypoglycemia is primarily caused by excessive secretion of insulin in the body, or by consuming too little sugary food, leading to abnormally low blood sugar levels and certain clinical symptoms such as palpitations, trembling hands, fatigue, and cold sweats. Therefore, it is caused by pathological reasons within the body itself, and not by infectious bacteria or viruses from external sources, so it is not contagious. However, when hypoglycemia occurs, it is necessary to promptly consume sugary foods to alleviate the symptoms and prevent more serious damage to the body.

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Written by Lin Xiang Dong
Endocrinology
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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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Written by Du Rui Xia
Obstetrics
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Causes of Hypoglycemia in Pregnant Women

Hypoglycemia is a relatively common clinical phenomenon in pregnant women during pregnancy, mainly manifesting as dizziness, blurred vision, and even fainting. This occurs because the metabolism of pregnant women accelerates during pregnancy, while the secretion of the islets is not correspondingly increased. This results in the physiological function of the islets being very active, which can easily lead to low blood sugar in expectant mothers, causing symptoms such as dizziness and fatigue due to hypoglycemia. Additionally, hormonal changes during pregnancy can lead to decreased appetite, nausea, vomiting, irregular eating habits, and malnutrition in pregnant women. Despite this, energy consumption still occurs, which can also lead to hypoglycemia.

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Written by Luo Juan
Endocrinology
57sec home-news-image

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 Luo Juan
Endocrinology
1min 12sec home-news-image

Causes of Hypoglycemia in Females

The causes of hypoglycemia in women can be related to various factors, including drug-induced, hepatic, pancreatic, non-pancreatic tumors, renal, endocrine issues, as well as excessive consumption or insufficient intake, among others. For women, apart from organic lesions, common causes include excessive hunger, intense exercise, or chronic diarrhea, which can lead to hypoglycemia. Some women experience hypoglycemia due to lactation or pregnancy without timely replenishment of energy. Additionally, a common condition seen in women is idiopathic functional hypoglycemia, often found in neurotic women, which typically presents with symptoms of hunger and sweating, usually with few physical signs. Characteristically, it involves early-occurring reactive hypoglycemia that generally resolves on its own in less than 30 minutes, with blood glucose tests showing slightly decreased levels and normal or slightly elevated insulin levels in the blood.