Has anyone ever eaten an apple with a moldy core?

Yes, I’ve experienced that. While it was gross, I’ve lived to tell the tale more than once. Come to think of it, maybe that is why I now cut apples up instead of biting into a whole one.

You’ll be fine. I’ve done it before. Just watch what you’re eating before you put it in your mouth!

Yep. Just don’t eat the mold

I may have. I eat a lot of apples, and sometimes I notice one getting brownish or “less than clean white” where I expect perfectly white flesh. (And I’m not talking about how the apple will brown when left exposed to air for more than a few minutes.)

When I see that happening, I don’t eat any “deeper” into that apple, but I’ll continue to eat to the same depth all around, and throw out a fatter core than normal. So those may have been moldy cores, too, for all I know. I just don’t go deep enough to find out.