Why do people die when they are deprived of oxygen for too long?

since oxygen is essential to aerobic respiration, which gives our cells the energy they need to survive.

When people are deprived of oxygen for too long, their cells are unable to produce energy through aerobic respiration. Without oxygen, cells switch to anaerobic respiration, which produces lactic acid as a byproduct. Accumulation of lactic acid leads to acidosis, disrupting cellular functions. Vital organs, especially the brain, cannot function properly without oxygen, leading to tissue damage and ultimately, death.

People die when deprived of oxygen for too long because oxygen is essential for cellular respiration, which is the process by which cells generate energy. Without an adequate supply of oxygen, cells cannot produce enough energy to sustain essential bodily functions. This can lead to organ failure and ultimately death.