I had this very discussion with a confused JW woman a couple of years back when the blood fractions nu-lite was revealed. She was very upset as to why the GB would be allowing fractions.
My question to her was
ME: But you eat meat dont you?
HER: Yes
ME: Is all the blood removed from the steak before you eat it?
HER: (slack jawed, sound of crickets, cogs turning behind the eyes) Oh yeah.
End of discussion