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By Mayo Clinic staffIf you ignore the symptoms of hypoglycemia too long, you may lose consciousness. That's because your brain needs glucose to function. Recognize the signs and symptoms of hypoglycemia early because untreated, hypoglycemia can lead to seizures, loss of consciousness and even death.
On the other hand, if you have diabetes be careful not to overtreat your low blood sugar. If you do, you may cause your blood sugar level to rise too high. This, too, can be dangerous and may cause damage to your nerves, blood vessels and various organs.