On the opposing side, Cyc poses the Jehovah's Witness point of view that blood transfusion is not needed.
Yes, there most definitely are times when blood transfusions are not only medically necessary but ethically mandatory, i.e., without them you would be condemning a patient to death.
Its not even open to debate. Any attempting to argue the opposing position is simply following a cult, not science. There is no medical or legitimate moral justification for withholding a lifesaving blood transfusion.
cyc, ok, tell me what are the biblical justifications that you Jehovah's Witnesses use to argue against blood transfusions?