Patient's question:
During this period, when I go out, I often encounter situations where my eyes go black. Sometimes my consciousness is still quite hazy, and I need to stay in place for a while before the symptoms gradually subside. A friend told me that this might be due to low blood sugar. I would like to consult about what the lowest standard of human blood sugar is and how to determine if it's low blood sugar.Doctor's answer:
The normal value of blood sugar is between 3.9 to 6.1 millimoles per liter when fasting. If fasting blood sugar is higher than 3.9, it is considered low blood sugar. Additionally, symptoms in the body can also indicate low blood sugar, such as dizziness, fatigue, sudden fainting, or transient brain ischemia and hypoxia. If low blood sugar is not treated promptly, it can be very dangerous. In daily life, it is advisable to consume more foods that replenish qi and blood, and take medication to lower blood sugar when necessary.