Were talking new redblood cells that eat up the old dead bad ones, etc. I ignore all medical garbage because they never ever look at the body as a whole and rarely if ever have a test worth reading, if you read BOOK I well you may have noticed Dr. Hay believed in NO MEDICAL TEST. David Christopher states to throw your blood testing/pressure and even your temp guage away, they all mislead if you read what the MD has to say.
While fasting and developing new redblood cells you blood gets very thin and thin blood saves your life while thick blood ends it.