Ulcers, Diverticulosis and cancer, oh my!

The Washington Post reports that any of these could be the cause of castro's gastrointestinal bleeding.

Regardless of Castro's diagnosis, "given certainly his age and the urgent nature of his procedure, he is at an increased risk for complications," said Bhanot. "Not only his age but his overall health will really be the critical factor" in recovery.

One can only hope that whatever it is he's suffering from, that he's really SUFFERING from it.