system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5: When people die of old age, what causes their body to shut down seemingly spontaneously - what is the trigger that results in the body deciding that this is the end?
gpt
Death from old age is a legal classification, not a medical one.  It means than an elderly person passed away without any suspicious circumstances, and no purpose is served by investigating further.  They die of *something*, heart failure, stroke, asphyxiation, it is just not terribly important to figure out exactly what.