If your ex emails you and asks if you're doing alright with your health problems, does it mean anything more than face value?

They're concerned. Don't read anything else into it.

It shows they're concerned with your well being, but it may be nothing more than that. Still, it's nice to know people care about us to some extent.

Just concerned, we once loved our ex's so there will always be the hope that they are well.

Ask them if they have an std?