Judaism and IVF: The First Commandment Meets Modern Medicine

The First Commandment

The very first commandment in the Torah — the first instruction God gives to the first human beings — is not about prayer, or Shabbat, or kashrut. It is about having children.

“Be fruitful and multiply, fill the earth and subdue it” (Genesis 1:28).

This is not a suggestion. In Jewish law, pru urvu — “be fruitful and multiply” — is a mitzvah, a commandment. It is the first of the 613, and it carries enormous weight. The Talmud (Yevamot 63b) teaches that a person who does not engage in procreation is “as if he diminishes the divine image.” The Mishnah (Yevamot 6:6) specifies the minimum fulfillment: at least one son and one daughter (according to Beit Hillel) or two sons (according to Beit Shammai).

So what happens when a couple wants to fulfill this commandment — desperately, agonizingly wants to — but cannot conceive naturally?

This is where modern reproductive technology meets ancient Jewish law, and the result is one of the most fascinating and compassionate areas of contemporary halakhic discussion.

IVF: Generally Permitted

The good news — if you are a Jewish couple struggling with infertility — is that in vitro fertilization (IVF) is generally permitted, and often encouraged, across all major denominations of Judaism.

The reasoning is straightforward: IVF helps couples fulfill the commandment to be fruitful and multiply. Since the goal is a mitzvah, and the means do not involve any prohibited act (such as adultery or destruction of life), the procedure is permissible.

Orthodox authorities have addressed several specific halakhic concerns:

Sperm collection: Jewish law generally prohibits the “destruction of seed” (hashchatat zera). However, when the purpose is procreation, this prohibition is overridden. Most authorities permit masturbation for the purpose of IVF, as it serves the mitzvah of reproduction. Some suggest the use of a special condom during intercourse to collect the sample.

Timing around niddah: Jewish law requires separation between husband and wife during menstruation and for seven days after (the laws of niddah and mikveh). IVF procedures sometimes require monitoring and intervention during this period. Halakhic authorities and organizations like the Puah Institute in Israel provide guidance to help observant couples navigate these timing issues.

Embryo status: Jewish law does not consider a pre-implanted embryo to be a person. An embryo outside the womb has no independent legal status. This means that the creation, freezing, and even disposal of excess embryos raises fewer halakhic objections than in some other religious traditions.

Egg Donation: Who Is the Mother?

When IVF uses the couple’s own eggs and sperm, the halakhic questions are relatively straightforward. But when donor eggs are involved, the situation becomes far more complex.

Jewish law determines religious identity — specifically, whether a child is Jewish — through the mother. But in egg donation, there are potentially two mothers: the genetic mother (the egg donor) and the gestational mother (the woman who carries and gives birth to the child).

Who is the halakhic mother?

This question has produced a genuine split among leading authorities:

• Birth-based approach: The Talmud seems to assume that maternity is determined by birth. Several major authorities — including Rabbi Ovadia Yosef — ruled that the woman who gives birth is the legal mother, regardless of genetics.
• Genetic approach: Other authorities argue that in the age of assisted reproduction, the genetic contribution is what establishes maternity. If the egg comes from a Jewish woman, the child is Jewish, regardless of who carries it.
• Both: Some authorities suggest that both the genetic and gestational mothers have a claim to maternity — a position that creates complications but acknowledges the reality that motherhood in the age of reproductive technology is more complex than the Talmud’s authors could have imagined.

In practice, many rabbinical authorities recommend that children born through egg donation or surrogacy undergo conversion (giyyur) as a precautionary measure, to remove any doubt about their Jewish status.

Surrogacy: The Deepest Questions

Surrogacy — where one woman carries a pregnancy for another — raises the most complex halakhic questions of all.

Consider: a married Jewish couple uses the wife’s egg, the husband’s sperm, and a non-Jewish surrogate to carry the child. Who is the mother? Is the child Jewish? What is the surrogate’s status — is she merely a vessel, or does the act of carrying and birthing a child create a genuine maternal bond?

Jewish authorities have grappled with these questions with characteristic rigor:

Orthodox views are divided. Some permit surrogacy when the egg comes from the Jewish wife (making her the genetic mother). Others have concerns about the birth mother’s role. The Chief Rabbinate of Israel initially resisted surrogacy but has gradually developed guidelines for observant couples.

Conservative Judaism generally permits surrogacy while emphasizing the importance of ethical contracts, psychological support for all parties, and the principle that surrogacy should not be exploitative.

Reform Judaism supports surrogacy as a means of family building, with fewer halakhic restrictions.

Israel passed a surrogacy law in 1996 — one of the first countries in the world to regulate the practice. The law has been expanded over time and now permits surrogacy for married and unmarried couples, though the regulations remain complex.

Sperm Donation and Paternity

Sperm donation raises a different set of halakhic concerns. If a married Jewish woman conceives with donated sperm from a man who is not her husband, is this a form of adultery?

Most authorities say no — because adultery in Jewish law requires a sexual act, and artificial insemination involves no sexual contact. However, some authorities express concern about the potential for incest in future generations: if children of anonymous donors unknowingly marry each other, they might be halakhic siblings.

To address this concern, some rabbinical authorities have advocated for non-anonymous donation and careful record-keeping. The Puah Institute maintains records to prevent halakhic incest among children conceived through assisted reproduction.

Israel: A Nation of Fertility

Israel’s approach to fertility treatment reflects its Jewish cultural values. The country has more fertility clinics per capita than any other nation. The national health system covers IVF cycles generously — up to two live children for women up to age 45. Israel performs more IVF procedures per capita than any country in the world.

This is not coincidental. In a nation whose founding narrative includes the biblical promise of descendants “as numerous as the stars,” fertility is both a personal desire and a national value. The combination of Jewish law’s positive attitude toward reproductive technology and Israel’s pronatalist policies has created a society where fertility treatment is normalized, accessible, and culturally supported.

Denominational Summary

Issue	Orthodox	Conservative	Reform
IVF with own gametes	Permitted	Permitted	Permitted
Egg donation	Permitted with conditions	Permitted	Permitted
Surrogacy	Debated, increasingly accepted	Permitted with ethical safeguards	Permitted
Sperm donation	Permitted with concerns	Permitted	Permitted
Embryo disposition	Permitted (not considered a person)	Permitted	Permitted

The Commandment That Drives It All

What makes the Jewish approach to fertility technology distinctive is not permissiveness for its own sake — it is the moral urgency of the first commandment. “Be fruitful and multiply” is not a lifestyle choice in Jewish law; it is a divine obligation. When a couple cannot fulfill it naturally, assisting them through technology is not a compromise — it is a mitzvah.

This is the genius of a legal system that is simultaneously ancient and adaptive. The rabbis who debated these questions did not have IVF in their vocabularies. But they had principles — the sanctity of life, the obligation to procreate, the flexibility of halakha, and the compassion to recognize that infertility is one of the deepest forms of human suffering. Those principles, applied with rigor and empathy, have produced a tradition that embraces reproductive technology not as a threat to tradition but as a tool for fulfilling it.