Does low blood sugar kill people?

Hypoglycemia can cause death in severe cases.

Hypoglycemia affects brain function. The brain relies almost entirely on glucose for energy, and when blood sugar levels drop significantly, the brain's energy supply is insufficient, leading to severe conditions such as confusion and coma. Severe hypoglycemia of the brain for a long time can cause irreversible damage and even death. In addition, it can induce cardiac problems such as arrhythmia. Hypoglycemia can cause stress reactions in the body, leading to abnormal cardiac electrical activity, increasing the risk of arrhythmia, severe arrhythmia may trigger cardiac arrest, and then endanger life.