system
Given the following post, respond as if you're commenting on Reddit:
human
Are there any body parts that can't get cancer?

I recently learned that teeth can get cancer which got me to wondering, are there any body part that can't get cancer? Because it doesn't seem like it.
gpt
Cancer is caused by an error in cell devision that causes the cell to replicate faster then it should. That means that the only cells that cannot become cancers are the onces that can no longer replicate. So that means you cannot get cancer in your red blood cells (no DNA either),  something like your hair (no longer alive) or certain nerves(sheets can be a problem though) which do not replicate.