Did you know that Pope Francis only has one lung? I don't know the details except he's had one lung for many years. He appears to be in good health but geez, that's not a good sign.
TIS
Some medical experts weighed in on the issue of the pope having one lung, and the overall opinion was that if the condition hadn't adversely affected him from his early teenage years to age 76, it's likely that it won't manifest into a problem for him.
