A proper response requires that the question be limited in scope for it is too general for practical consideration. Jewish law under certain conditions prohibits abortions and in other cases may even mandate abortions. Accordingly, no one may be able to state any clear cut general position. In order to solicit a realistic and pragmatic response it is necessary, therefore, to frame the question in a more limited manner.
One such concern would be to assess whether Jewish law agrees with the legal decision of the Supreme Court in Roe vs. Wade (1973). In this case, the Supreme Court ruled that within the first trimester of pregnancy women have the right to terminate an embryo or fetus within them. It, moreover, clearly contends that women are under no requirement to provide medical or other compelling reasons to permit the abortion. Women simply have the authority and discretion within the first trimester to abort a fetus. Jewish law, however, disagrees with the above position. Women are not granted such authority. Abortion on demand is simply prohibited. Without extenuating circumstances the rabbinate does not condone abortion. Though this is the consensus ruling of halachic scholars, it is not clear as to whether this prohibition is a Biblical or rabbinic ruling.
One sage in the Talmud, Rav Yishmael, even suggests that Scripture itself is the source for prohibiting indiscriminate abortions. It is written, “Whoso sheds man’s blood by man shall his blood be shed”. (Genesis 8:6- The Holy Scriptures, Koren Publishers)Of interest, is that the actual Hebrew text does not state that the action was performed “by man”. It, rather, says that it was “B’adam” [in man or , rather, in one’s body].-. Literally it means the shedding of blood occcurred in the person’s body. Rav Yishmael, therefore, contends that the meaning of a body in the body of another, relates to the abortion of a fetus which is prohibited.(Sanhedrin 57b) Others, do not consider such a Biblical interpretation as logically compelling. What is clear is that whether the prohibition is Biblical or rabbinic the consensus is to outlaw abortions unless there are extenuating circumstances.The Talmud, for example,rules that one may violate the Shabbat to save the fetus of a woman who died in childbirth. (Arachin7b) This overtly demonstrates the high regard held of the religious importance of preserving and protecting a fetus.This law does not define a fetus to be a living being. It merely notes that a fetus which will develop into a live person must be protected.
A brief case by case analysis will shed light on Halachic reactions to specific issues.
1.In the event that the mother’s life is deemed to be in jeopardy due to her pregnancy, Jewish law mandates the termination of the fetus to save the life of the mother.(Ohalot 7:6) It is evident that had the mother not had a life threatening condition, the termination of the fetus would have been prohibited.
2. Should a fetus be defective, there is rabbinic disagreement as to whether it is permissible to abort the fetus. Rav Moshe feinstien rules that it is forbidden to terminate the pregnancy contending that defective children have a right to live. Accordingly, he prohibits aborting the pregnancy of a mother who has been determined that she will give birth to a Tay Sachs child. HaRav Feinstien is of the firm belief that the abortion of such pregnancies is a serious immoral violation of Jewish law.(See “Aborting A Jewish Fetus”, Kuntras L’Torah V’Hora’a, Choveret 7, p.9,Elul 5’737) A contrary lenient position was ruled by Rabbi Eliezer Waldenberg. He felt that the severity of the ramifications of the Tay Sachs disease, namely, stunted physical and mental development followed by inevitable death by the age of four, mandated Halachic scholars to be lenient. As such, he permitted abortions in such cases to be performed until the seventh month of pregnancy.(Responsa Tzitz Eliezer, Vol.13:102)
3. May a woman who was raped abort her pregnancy? Rav Benzion Uziel, Sefardi Chief Rabbi of Israel, alongside Rav Kook, ruled that it is permissible to abort the pregnancy of a women raped to protect her from shame and humiliation.(Mishpatai Uziel,Vol.III,Choshen Mishpat, 46)
4. May the fetus of a Mamzer, a bastard or a child born in wedlock be aborted? (It is important to note that according to Jewish law a Bastard, a Mamzer is not a child of wedlock. It is , rather , a child born from incest or adultery.) Rav Moshe Feinstien rules that it is forbidden to abort such a child as well as a child of wedlock. (op.cit.,) According to RavUziel, it is permitted to avoid shame.(op.cit.,) Rav Yaakov Emdin ruled that it was permitted to abort a married woman made pregnant through adultery for the child would be classified as a Mamzer but not a child of wedlock for such a child has no stigma. (She’lat Yaviz 1:43)
5. In Nazi concentration camps it was ordained that all pregnant women were to be put to death.Were such women permitted to abort their pregnancy? Rabbi Efraim Oshry ruled that it was permissible to save the lives of the women. (Tashbez, pt3, No.2)
6 May an abortion be performed to prevent a nervous breakdown or mental problems to a mother? Those rabbis that disallow an abortion to women raped or claiming that a live birth will generate shame, also do not consider mental anguish as an Halachic excuse for an abortion. Those rabbis that deem shame to a mother as reason to permit abortions are lenient in terms of mental problems.