system
Given the following post, respond as if you're commenting on Reddit:
human
When people die of "natural causes," what is exactly that happens to them

Is it heart failure? Do their hearts just become so weak that it can no longer serve its function? Is it even heart related at all?
gpt
"Natural causes" is just a blanket statement. It can mean they died of sickness(from even a cold or flu) or heart failure which are all natural processes. Its just a nice way to say someone has passed basically. At one point in your life one of the body systems will simply give out, such as some cells that have limited regeneration or simply cant regenerate. Its up to you to keep healthy and try and maximize how long you will live.

Unnatural causes are things such as an accident, suicide, murder.