The Pope Has Only One Lung. Here Are Some Other Organs You Can Live Without

Pope Francis Has One Lung:  What Organs Can You Live Without?  by Rachael Rettner.  My Health News Daily.  March 14, 2013.

Due to an infection as a teenager Pope Francis had one of his lungs removed.  While average everyday exertion should not pose a problem, he could conceivably face increased risk with another infection or pneumonia.   People can live without a variety of organs including the spleen, colon, appendix and others.