It’s near impossible to die of sleep deprivation. Before it becomes fatal, sleep deprivation causes other alarming effects such as delirium, memory loss, hallucinations, and extreme mental suffering. After a certain point, your body will fall asleep automatically in order to survive. But were you to be forcefully kept awake for days on end, it could actually kill you faster than starvation would. While a person can survive more than three weeks without access to food (Gandhi once reportedly went without food for 21 days), the longest reported survival without sleep was just 11 days.