system
Given the following post, respond as if you're commenting on Reddit:
human
What would happen if all the micro-organisms on and in your body suddenly disappeared?

Things like gut flora, helpful (and harmful) bacteria, mites, basically everything that isn't an actual part of your body like cells.  What would happen if they all disappeared at once?  Would you die?
gpt
Well, in truth we are not sure about that.

However, it can be safely said that if you didn't live in a bubble so to speak, the consequences could be terrible, possibly, fatal.

Excluding the ways our microbiome helps our metabolism and stimulates our immune system, simply by being there, it is preventing other, potentially dangerous microbes from settling in. The sudden loss of this dynamic ecosystem could lead to harmful microbes flooding the body and overwhelming the immune system.