Board Thread:Questions and Answers/@comment-75.70.197.147-20130224222919/@comment-75.23.45.51-20130309143509

Another reason for switching is that his body wouldn't create its own blood anymore. All Raiden is anymore is a skull and part of a spine, really, minus the bottom jaw even. Real blood cells die, while artificial, non-biological blood could potentially reduce the need for regular dialysis.