Menstruation

Menstruation occurs at the end of a woman's menstrual cycle. The lining of the uterus is shed and expelled from the body to prepare the uterus for a fertilized ovum. Menstruation occurs in humans and more developed apes, including gorillas and orangutans from puberty to menopause.

Menstruation and the Bible

Under Old Testament law, a woman was to be put apart during menstruation:

And if a woman have an issue, [and] her issue in her flesh be blood, she shall be put apart seven days: and whosoever toucheth her shall be unclean until the even. And every thing that she lieth upon in her separation shall be unclean: every thing also that she sitteth upon shall be unclean. And whosoever toucheth her bed shall wash his clothes, and bathe [himself] in water, and be unclean until the even. And whosoever toucheth any thing that she sat upon shall wash his clothes, and bathe [himself] in water, and be unclean until the even. And if it [be] on [her] bed, or on any thing whereon she sitteth, when he toucheth it, he shall be unclean until the even. And if any man lie with her at all, and her flowers be upon him, he shall be unclean seven days; and all the bed whereon he lieth shall be unclean. Leviticus 15:19-24 (KJV)

Max Neuberger, writing in his "History of Medicine" states:

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The commands concern prophylaxis and suppression of epidemics, suppression of venereal disease and prostitution, care of the skin, baths, food, housing and clothing, regulation of labour, sexual life, discipline of the people, etc. Many of these commands, such as Sabbath rest, circumcision, laws concerning food (interdiction of blood and pork), measures concerning menstruating and lying-in women, and those suffering from gonorrhoea, isolation of lepers, and hygiene of the camp, are, in view of the conditions of the climate, surprisingly rational.

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