What is the normal blood sugar standard?

Generally, the normal standard for blood glucose is 3.9–6.1 mmol/L. A detailed explanation is as follows:

The normal range for blood glucose in a fasting state is 3.9–6.1 mmol/L. This range serves as an important indicator for maintaining the normal physiological functions of various organs in the body. When blood glucose levels fall within this range, it provides sufficient energy to support daily activities and metabolic needs, while also preventing damage caused by either high or low blood glucose levels. If fasting blood glucose drops below 3.9 mmol/L, symptoms of hypoglycemia such as dizziness, palpitations, and hand tremors may occur, affecting the normal functioning of the brain and other organs. Conversely, if fasting blood glucose exceeds 6.1 mmol/L, it may indicate impaired glucose tolerance or a risk of prediabetes. Prolonged elevation of blood glucose levels can cause chronic damage to blood vessels, nerves, and other tissues.

In daily life, it is important to maintain regular eating habits, avoiding both overeating and excessive dieting, and reducing the intake of high-sugar and high-fat foods. Additionally, developing the habit of regularly monitoring blood glucose levels is crucial, especially for individuals with high-risk factors such as a family history of diabetes, obesity, or a sedentary lifestyle. Furthermore, engaging in regular moderate physical activity, such as walking, jogging, or swimming, can help maintain stable blood glucose levels and reduce the risk of abnormal glucose metabolism.