I get highly irritated when this subject comes up. This idiot gave a talk in my hall recently and said that transfusion of blood and eating blood was the same thing. My wife accepts this reasoning. How can I shut this bullsh@@# down please help.
Feeding patients is essential to good medicinal outcomes. Historically a good surgeon could repair damaged tissue of an injured patient, but if the patient was unable to eat afterward the patient would die despite having their tissue repaired. Hence medical providers sought a means of introducing nutrition to a body without a patient having to eat by the usual method.
One obvious method to explore was intravenous administration of nutrition. This is called parenteral nutrition. Lots of different liquid concoctions were tried, including blood and products rendered from blood. In the case of blood the only product rendered from blood that was found to offer nutrition when administered intravenously was plasma proteins. Oddly enough, Watchtower doctrine lets JWs accept transfusion of all the plasma proteins they would care to accept! That's a real kick in the pants of the notion that transfusion of blood and eating blood are equivalent! The ONLY blood product that is at all USEFUL as parenteral nutrition is ACCEPTABLE under Watchtower doctrine. (PS: Medical science does not advocate use of plasma proteins in/as parenteral nutrition because there are much safer and less expensive options which also have much greater availability.)
For more on this subject perhaps the following will be useful: