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Reprinted with permission from Biomedical Ethics and Jewish Law, published by KTAV.
In a situation in which the husband produces far too few sperm with each ejaculate to impregnate his wife or where a woman is unable to move the egg from the ovary into the uterus because of blocked Fallopian tubes, the former Israeli Chief Rabbi Ovadiah Yosef gave his qualified approval to the in vitro [i.e. test tube] fertilization of the woman’s egg with the husband’s sperm and the reimplantation of the fertilized zygote or tiny embryo into the same woman’s womb.
Another former Chief Rabbi, Shlomo Goren, asserted that conception in this manner is morally repugnant but legally unobjectionable.
This situation represents a type of barrenness akin to physical illness and, therefore, justifies acts which entail a small amount of risk, such as the procurement of eggs from the mother’s ovary by laparoscopy, a minor surgical procedure.
There is certainly no question of adultery involved, since the sperm used is that of the husband. Sperm and egg procurement for this procedure are permissible because the aim is to fulfill the biblical commandment of procreation. The offspring is legitimate and the parents thereby fulfill their obligation of having children.
However, certain serious moral and Jewish legal problems relate to this type of test‑tube baby. If one uses sperm other than that of the husband, objections exist. Furthermore, if one obtains several eggs from the mother’s ovary at one time and fertilizes all of them so as to select the best embryo for reimplantation, is one permitted to destroy the other fertilized eggs? Do they not constitute human seed and, therefore, should not be “cast away for naught”? Is one permitted to perform medical research on the unused fertilized eggs? What is the status of other fertilized ova in the test tube? Is the destruction of such fertilized ova tantamount to abortion? Is such a fertilized ovum regarded as “mere water” during the first forty days of its development?
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