Which is more dangerous for the human body: low or high blood sugar?

Low blood sugar (hypoglycemia) and high blood sugar (hyperglycemia) both pose risks to the human body, but low blood sugar can be more dangerous in the short term as it can lead to loss of consciousness or even coma if left untreated. High blood sugar, on the other hand, can cause long-term damage to organs and systems in the body, such as the heart, kidneys, and eyes.