What causes high fasting blood glucose?

Elevated fasting blood glucose may be caused by factors such as excessive nighttime eating, lack of physical activity, hyperthyroidism, cirrhosis, or diabetes. It is recommended to seek timely medical attention, identify the underlying cause, and receive symptomatic treatment under the guidance of a qualified physician. Specific analyses are as follows:

1. Excessive nighttime eating: Consuming large amounts of high-fat foods such as fried chicken and peanuts during dinner or having snacks before bedtime may lead to elevated nighttime blood glucose levels, thereby affecting fasting blood glucose the next morning. It is recommended to adjust the dietary composition of dinner, reduce intake of high-sugar foods like cakes and chocolate, and finish dinner before 7 p.m. to promote digestion.

2. Lack of physical activity: Prolonged sitting or jobs requiring extended periods of standing may reduce the body's sensitivity to insulin, weakening its ability to regulate blood glucose, which may manifest as elevated fasting blood glucose. It is advisable to increase daily physical activity, such as walking or jogging, to improve overall health.

3. Hyperthyroidism: This condition may result from poor emotional states or excessive thyroid hormone production. The disease can accelerate metabolism and disrupt glucose metabolism, leading to increased fasting blood glucose. Symptoms may include weight loss and exophthalmos (protruding eyes). Patients are advised to strictly follow medical instructions for oral medications such as propylthiouracil tablets, carbimazole tablets, or Xiaokugucao granules.

4. Cirrhosis: Typically caused by long-term alcohol abuse or bile stasis, cirrhosis may reduce glycogen synthesis in the liver, resulting in elevated fasting blood glucose. Patients may also experience symptoms such as jaundice and ascites. It is recommended that patients follow medical advice when using medications such as furosemide injection, bumetanide tablets, or Anluo Huaxian pills.

5. Diabetes: This may be triggered by factors such as abnormal lipid levels or hypertension. In diabetic patients, pancreatic β-cell function often declines, leading to insufficient insulin secretion, which may cause the aforementioned symptoms, along with increased appetite and weight loss. Patients should use medications such as insulin glargine injection, orlistat capsules, or acarbose capsules under the guidance of a physician.

In daily life, patients are advised to ensure adequate sleep, avoid overly stimulating nighttime activities, and use relaxation techniques such as deep breathing and meditation, all of which are beneficial to health.