What can happen if you have incorrect humidity levels?

[Skiploder]

What I mean by that is can a BP get sick (RI, etc.) from not having the correct humidity levels? Also, besides bad/stuck sheds, what else could happen?

There is a possibility that if the humidity level is too low, then they will attempt to soak themselves to correct their cage conditions and will cool themselves down in the process to the point where they inhibit the digestive process.

This can lead to regurgitation or worse - food not being digested and subsequently sickening the animal.