Menstruation and levitical law

""'If a woman has a discharge, and her discharge in her flesh is blood, she shall be in her impurity seven days: and whoever touches her shall be unclean until the evening."


Author: Leviticus 15 Verses #: 19

A normal and natural part of being a women is shedding the lining of the uterus once per month in a discharge of blood.  A creator would know this and acknowledge this as fact, and would declare that there is nothing unnatural about the occurence.  The holy bible, on the other hand makes menstruation something that makes a woman an untouchable.  I would assume that this included little children and breast feeding infants that absolutely require the "touch" of their mother whether she in having her monthly period or not.  To refer to a biologic norm as an "impurity" which renders a woman an untouchable and impure speaks to an author and a biblical authority that does not understand biology and implies that Yahweh  was completely out of touch with "his" own creation.  Clearly,  the bible was written by male priests 4,000 years ago who had no knowledge of science and biology and apparently little actual direct revelation from an all knowing "creator" who saw women as lesser beings who were impure and untouchable once per month.