Aposthia

Aposthia is a rare congenital condition in humans, in which the foreskin of the penis is missing.

Toward the end of the nineteenth century, E. S. Talbot claimed in Medicine that aposthia among Jews was evidence for the now-discredited Lamarckian theory of evolution. In his work, "The Variation of Animals and Plants under Domestication", Charles Darwin also mentioned cases of "born circumcised" babies as "conclusive evidence" for the now-discredited blending inheritance.

It is likely that the cases he described were actually hypospadias, a condition in which the urinary meatus is on the underside of the penis. Neither condition has been shown to have a higher frequency in Jews or Muslims.

The Midrash of Ki-Tetze [כי תצא] notes that Moses was born aposthic. Other sources tell us that Jacob, his son Gad and King David were also born aposthic. The book Abot De-Rabbi Natan (The Fathers According to Rabbi Nathan) contains a list of persons from the Israelite Scriptures that were born circumcised: Adam, Seth, Noah, Shem, Jacob, Joseph, Moses, the wicked Balaam, Samuel, David, Jeremiah and Zerubbabel. Jewish law requires males born without a foreskin or who lost their foreskin through means other than a formal circumcision ceremony (brit milah ברית מילה) to have a drop of blood (hatafat-dam, הטפת דם) let from the penis at the point where the foreskin would have been (or was) attached. The Talmud (Shabbat 135A) records a discussion of whether the importance of this letting of blood supersedes Shabbat, on which only a boy who was born the previous Shabbat can be circumcised. If a regular circumcision is delayed, there is no disagreement that this may not be performed on Shabbat. However, in the case of aposthia, there are two schools of thought.

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