Jehovah's Witnesses do not accept a blood transfusion is more of religious issues rather than a medical dispute. Jehovah's witnesses of the old as well as new tributes clearly mark that they abstain from any kind of blood transfusion even during a medical emergency. They carry the believe that God has given them blood as the representation of life, so the reason they do not accept blood is in accordance to the God's obedience and also because this is a sign a disrespect towards him as he is the giver of life (www.jw.org).