Board Thread:Warhammer 40k General Discussion/@comment-24821739-20140604204305/@comment-96.237.78.233-20140610213602

What do you think Caffeen? For someone with the Emperor as their icon you do not seem to believe it.

Also Marines might die of old age, it is not stated anywhere that they are immortal. If you study science. Like I did. You will know that cells eventually do die. Incapable of reproducing. Therefore they are probably mortal but with ridiculous longevity. If Space marines are immortal and can't die of old age it would mean that they are truly little primarchs rather than augmented men. But they do age exteriorly so I suspect its the later. But again it is not touched upon explicitly by GW. So you might be right but don't be absolute about it.