eat no manner of blood
Leviticus 7:26
7:26 eat no manner of blood. The prohibition against eating blood began with the Noahic covenant (Genesis 9:4), and continues today (note Acts 15:20,29). The blood both contains and symbolizes life (Leviticus 17:10-13), and thus should not be eaten. Furthermore, modern medical science confirms that blood tends to become septic soon after death, and hence is dangerous to health.