Actually I have a reasonable amount of their medical histories. My father had a sister who died as a small child of cancer; grandfather died in 1993 of heart stuff; grandmother has neuropathy (although I don't know why but I'm assuming she's in her 80s). I don't know much about my father's health stuff. He's not dead and hasn't asked for a kidney.

This is the time of year when I do sort of think about calling paternal grandmother, though. We'd been in occasional contact until about 3 years ago.