Giving blood is one of the most important donations one can do in order to help other people. For millenia humans have understood that blood is important to vitality and life and naturally a lot of religion has placed “controls” on blood. Be it the various groups that practiced human sacrifice to Kosher law to the Jehovah’s Witnesses.
Blood has been common in all of them and even symbolically such as the “faux blood offerings” of Kali and the red wine used to symbolise the blood of Christ.
[warning]NSFW – Contains content with regard to blood and sex[/warning]
So it comes with no surprise that an Israeli Rabbi has ruled on “blood”.