Catholic Bioethics Perspectives on In Vitro Gametogenesis Technology

The Sanctity and Dignity of Human Life

A cornerstone of Catholic bioethics is the belief in the inherent sanctity and dignity of human life from the moment of conception (Congregation for the Doctrine of the Faith 1987). The Catholic Magisterium, particularly in documents such as Donum vitae and Dignitas personae, unequivocally affirms that the human embryo must be treated as a person and afforded the inviolable right to life (Congregation for the Doctrine of the Faith 1987; Congregation for the Doctrine of the Faith 2008). Catholic bioethicists consistently share this commitment, viewing the embryo as a unique human individual created in the image of God (imago Dei) (Pacholczyk 2024; Meaney 2023). As the Congregation for the Doctrine of the Faith (1987, I.1) states: “From the time that the ovum is fertilized, a new life is begun which is neither that of the father nor of the mother; it is rather the life of a new human being with his [or her] own growth.”

This principle has profound implications for ART. Technologies that involve the routine creation, freezing, and destruction of surplus embryos—a common practice in IVF—are heavily criticized for reducing human life to disposable biological material (McTavish 2022; Haas 1998). IVG exacerbates this concern by potentially enabling the creation of embryos on a vastly larger scale, increasing the likelihood of embryo destruction and instrumentalization (Pugeda 2022). As Pacholczyk (2024) observes from a Catholic perspective, the IVF industry produces and subjugates a subclass of humanity, and IVG threatens to exponentially increase this commodification by creating an inexhaustible supply of gametes and embryos.

The Giftedness of Human Life

A related theological foundation to the sanctity and dignity of human life is the understanding of life as a gift (Congregation for the Doctrine of the Faith 1987). Christian bioethics approaches morality as a cooperation with the divine, guided by natural law and discerned through reason. This cooperative framework is what morally distinguishes physician-assisted suicide or euthanasia from the legitimate withdrawal of extraordinary treatment, contraception from natural family planning, and assisted reproductive technology (ART) from acceptable assistance of the conjugal act.

Consequently, no one possesses a fundamental “right” to a child; rather, having a child is ultimately a gift. To avoid objectification, however, a child must not be viewed as a gift in the sense of a material possession. Because human life does not exist in isolation, it is more accurate to say that the parent‒child relationship itself is the gift, arising from an openness to the divine will. This perspective is reinforced by Gordon (2025), who argues that the current debate over IVF highlights a profound divide where the desire for reproductive choice often overshadows the moral gravity of creating and discarding embryos, urging a more honest dialogue that respects the dignity of human life. Given this inherent giftedness of human life, one can argue that IVG—when used for the artificial fertilization of a human egg—undermines life's sanctity and dignity. Furthermore, it implicitly encourages the public perception that human life is a commodifiable good.

It is equally important to clarify that having a child is not a mark of divine favor. While children are a gift, Catholic theology acknowledges the profound suffering of couples who long for a child but face infertility through no fault of their own. Such struggles do not diminish a person's inherent dignity, making pastoral sensitivity and compassionate understanding paramount considerations in these situations. Furthermore, understanding life as a gift underscores the natural right of children to be conceived, gestated, and raised by their biological parents. This right is rooted in the fundamental human need for a coherent genealogical identity and the stable environment provided by the complementary union of a mother and a father. Disrupting this natural order through third-party gametes or assisted reproductive technologies not only commodifies the child but also deprives them of their innate right to their origins, potentially leading to profound psychological and identity struggles (Golombok et al. 2011).

The Inseparability of the Unitive and Procreative Ends

Catholic theology emphasizes the intrinsic connection between the unitive (love-giving) and procreative (life-giving) aspects of the conjugal act (Paul VI 1968). Pope Paul VI's encyclical Humanae vitae articulates that these two dimensions must not be artificially separated, declaring that “by safeguarding both these essential aspects, the unitive and procreative, the conjugal act preserves in its fullness the sense of true mutual love and its ordination towards humanity's most high calling to parenthood” (Paul VI 1968, no. 12). Consequently, reproductive technologies are evaluated based on whether they assist the conjugal act in achieving its natural end or replace it entirely (Congregation for the Doctrine of the Faith 1987).

IVF and, by extension, IVG are generally viewed as replacing the conjugal act, as conception occurs in a laboratory rather than through the physical union of spouses (Burbidge 2025; Pugeda 2022). This separation is seen as depriving procreation of its proper context, reducing the generation of a child to a technical procedure rather than the fruit of mutual self-giving love (Haas 1998; Burbidge 2025). Catholic bioethicists emphasize that while medical intervention to overcome infertility is encouraged when restorative (such as NaProTechnology), excessive technological mediation that replaces the marital act dehumanizes the reproductive process (Meaney 2023; United States Conference of Catholic Bishops (USCCB) 2025).

The Sanctity of Marriage and the Family

The Catholic vision of the family is grounded in the complementary union of a man and a woman in marriage (Catechism of the Catholic Church 1997). The family is considered the foundational unit of society and the natural environment for the generation and rearing of children (Second Vatican Council 1965). Technologies that introduce third parties into the reproductive process—such as gamete donation or surrogacy—are thus viewed as violations of the marital covenant and the child's right to be conceived and born within a stable, biologically related family structure (Congregation for the Doctrine of the Faith 1987; USCCB 2025).

IVG challenges traditional family structures by enabling novel forms of genetic parenthood, such as same-sex, solo, and multiplex reproduction (Palacios-González, Harris, and Testa 2014; Taylor, Apelian and Adashi 2025). These applications are scrutinized not only for their departure from the biblical model of marriage but also for their potential psychological and social impacts on the resulting offspring, who may face fragmented or confusing genealogical identities (Cohen and Adashi 2025; Taylor, Apelian, and Adashi 2025).

Medicine as Restoration Versus Enhancement

A key distinction in Catholic bioethics is between therapeutic interventions that restore normal biological functioning and those that aim to enhance or circumvent natural human capacities (Meaney 2023). Medical technology is viewed as a gift from God to be used for healing and alleviating suffering, consistent with the healing ministry of Christ (Mark 2:17). However, when technology is employed to alter human nature or pursue eugenic goals, it crosses the line from stewardship to hubris (Pacholczyk 2025; John Paul II 1995). This aligns with the framework proposed by Curlin and Tollefsen (2021) in The Way of Medicine, which argues that true medical practice should be guided by practical reason aimed at the objective good of health—the “well-working” of the human organism—rather than merely serving as a provider of services to satisfy patient preferences. When medicine deviates from restoring natural function to fulfilling desires for enhancement or novel reproductive configurations, it abandons its foundational ethical commitments.

This distinction is crucial in evaluating IVG. While using IVG to address certain forms of infertility may be framed as a therapeutic endeavor—despite methodological objections—its use for genetic enhancement, embryo selection based on non-medical socially desirable traits, or enabling reproduction outside the bounds of biological possibility is widely condemned as an overstepping of human limits (Pugeda 2022; Pacholczyk 2025).

Overcoming Primary Infertility

Primary infertility, caused by congenital abnormalities, disease, or gonadotoxic treatments like chemotherapy, represents a profound source of suffering for many couples. IVG offers the theoretical possibility of generating viable gametes for individuals who are unable to produce these naturally, allowing them to conceive genetically related children (Cohen and Adashi 2025; Suter 2015). The World Health Organization (2023) estimates that one in six people experience infertility in their lifetime, underscoring the magnitude of the need.

From a compassionate pastoral perspective, the desire of infertile couples to have children is recognized as natural and good (Meaney 2023; Young, Shaw, and Fehoko 2026). While restorative reproductive medicine seeks to heal the underlying causes of infertility to allow natural conception, the dominant Catholic bioethical stance remains highly critical of IVG. The Catholic Church maintains that even if the goal is therapeutic, the means—creating gametes in vitro and fertilizing them via IVF—remain morally illicit because these procedures replace the conjugal act (Congregation for the Doctrine of the Faith 1987; Burbidge 2025). Furthermore, the experimental nature of IVG raises significant safety concerns regarding epigenetic abnormalities and the long-term health of the offspring (Landecker and Clark 2026; Aizawa, Peters, and Wutz 2025). Exposing future children to these risks without their consent is viewed as a violation of their dignity and well-being (Cohen and Adashi 2025).

Age-Related Female Infertility

Age-related female infertility is an increasing concern as societal trends lead to delayed childbearing (Taylor, Apelian, and Adashi 2025). IVG could theoretically allow women to derive viable eggs from their own somatic cells regardless of age, eliminating the concept of the “biological clock” (Taylor, Apelian, and Adashi 2025). Cohen and Adashi (2025) note that IVG could be a less physically burdensome alternative to oocyte cryopreservation for older women, while conceding uncertainty regarding whether IVG-derived oocytes from older potential mothers will be of the same quality.

Catholic ethics cautions against the societal pressures that encourage delayed motherhood and the reliance on technological fixes to overcome natural biological limits (Pugeda 2022). While the desire for a genetically related child is understandable, the use of IVG to facilitate pregnancy in advanced maternal age raises concerns about the physical toll on the mother, the risks of pregnancy complications in older women, and the ability of older parents to provide long-term care for the child (Taylor, Apelian, and Adashi 2025). The Catholic Church's teaching that “spouses to whom God has not granted children can nevertheless have a conjugal life full of meaning” (Balistreri 2025; Catechism of the Catholic Church 1997, no. 1654) offers an alternative theological framework that resists the equation of human fulfilment with biological parenthood.

Preventing the Transmission of Genetic Diseases

One of the most compelling arguments for IVG is its potential to prevent the transmission of severe hereditary diseases. By generating a large number of embryos from in vitro-derived gametes, prospective parents could utilize preimplantation genetic testing (PGT) to select embryos free of genetic defects (Cohen and Adashi 2025; Bourne, Douglas, and Savulescu 2012). Alternatively, gene-editing technologies could be applied to the iPSCs or PGCLCs before in vitro gametogenesis (Ishii and Saitou 2017).

While the intention to prevent suffering is laudable, the methods employed are ethically problematic from a Catholic perspective. The use of PGT necessarily involves the discarding of embryos identified as carriers of genetic diseases, a practice condemned as a form of negative eugenics where the value of a human life is contingent upon its genetic quality (Congregation for the Doctrine of the Faith 2008). Gene editing of gametes or their precursors introduces the complex issue of germline modification, which affects not only the immediate offspring but all subsequent generations (Landecker and Clark 2026; Cohen and Adashi 2025). Catholic bioethicists urge extreme caution regarding germline interventions, citing the unpredictable long-term consequences and the risk of altering the fundamental nature of the human species (Pacholczyk 2024).

Facilitating Transgender and Intersex Parenthood

IVG could potentially enable transgender individuals who have undergone gender-affirming surgeries, as well as intersex individuals with disorders of sex development (DSD), to produce gametes corresponding to their genetic sex and conceive biologically related children (Taylor, Apelian, and Adashi 2025).

This application intersects with complex theological debates regarding gender identity and the nature of the human body. Traditional Catholic anthropology posits a fundamental binary of male and female, rooted in biological sex and ordered toward procreation within heterosexual marriage (Catechism of the Catholic Church 1997; Congregation for the Doctrine of the Faith 2008). The use of IVG to facilitate reproduction for transgender individuals, particularly if it involves creating sex-discordant gametes (e.g., deriving eggs from a biological male's cells, or deriving sperm from a biological female's cells), is viewed as a further distortion of the natural order (Taylor, Apelian, and Adashi 2025). Furthermore, as surrogacy is opposed in Catholic bioethics, the reliance on surrogate mothers for male-to-female transgender individuals to gestate the child adds another layer of moral objection (USCCB 2025; Pacholczyk 2025).

Posthumous Reproduction

The ability to derive gametes from somatic cells means that IVG could be used to create children using the genetic material of deceased individuals, provided their cells were preserved (Cohen and Adashi 2025).

Catholic bioethics strongly opposes posthumous reproduction. The creation of a child after the death of a parent intentionally deprives the child of the opportunity to be raised by that parent, violating the child's right to a complete family structure (Congregation for the Doctrine of the Faith 1987). It reduces the child to a means of consoling the grieving survivor or preserving a genetic legacy, rather than respecting the child as an end in themselves. The intentional creation of single-parent households through technological means is seen as contrary to the optimal environment for human flourishing designed by God (Meaney 2023). The posthumous offspring face a particularly pernicious situation due to their lack of a relationship, along with a lack of emotional, financial, and caregiving support from an already deceased parent after they are born (Chin et al. 2025a; Ethics Committee of the American Society for Reproductive Medicine 2018).

Mass Production of Donor Gametes

IVG could facilitate the industrial-scale production of donor gametes, alleviating the shortage of naturally donated eggs and sperm (Chin et al. 2025a; Pugeda 2022). With its potential to create an almost unlimited supply of eggs or embryos, IVG may raise the specter of embryo farming and commercialization on a scale that is hitherto unprecedented (Chia 2018; Pugeda 2022).

This application exacerbates existing Catholic concerns regarding third-party reproduction. Gamete donation is criticized for introducing a rupture between genetic and social parenthood, often leading to identity confusion, emotional distress, and genealogical bewilderment for donor-conceived offspring (Turner and Coyle 2000; Clark 2012). The mass production of gametes would commercialize human reproductive material on an unprecedented scale, treating gametes as commodities rather than elements of personal self-giving (National Catholic Register 2025). Furthermore, the widespread use of mass-produced gametes from select “ideal” donors raises the specter of accidental incest among half-siblings and promotes a consumerist approach to childbearing.

Same-Sex, Solo, and Multiplex Parenthood

Perhaps the most radical applications of IVG involve the creation of entirely novel family structures. IVG could enable same-sex couples to have children genetically related to both partners by deriving eggs from male cells or sperm from female cells (Cohen and Adashi 2025). “Solo IVG” could allow a single individual to provide both the egg and the sperm, resulting in a child with only one genetic parent (Suter 2015; Cohen and Adashi 2025). “Multiplex parenting” envisions deriving gametes from multiple individuals, allowing three or more people to share genetic parentage of a single child (Palacios-González, Harris, and Testa 2014; Cohen and Adashi 2025).

These scenarios represent a profound departure from the Catholic understanding of procreation and the family. Same-sex reproduction via IVG severs the connection between the complementarity of the sexes and the generation of life, a principle central to the Catholic ethical framework (Catechism of the Catholic Church 1997). Solo reproduction is criticized as a form of extreme narcissism, denying the child the richness of a dual genetic heritage and the relational dynamic of a mother and a father (Pugeda 2022; Congregation for the Doctrine of the Faith 2008). It must be noted that, while the resulting embryo in solo IVG would not technically be a clone—as it would have different alleles (Notini, Gyngell, and Savulescu 2020)—none of these cases remotely resemble the principle of a man and woman becoming “one flesh,” which the Catholic Church upholds (Gen. 2:24).

Multiplex parenting dissolves the concept of lineage and kinship entirely, creating a confusing web of biological relationships that undermines the stability and identity of the family unit (Palacios-González, Harris, and Testa 2014). Pacholczyk (2025) argues that IVG, in enabling these novel reproductive configurations, represents a fundamental assault on the intrinsic connection between marriage, sex, and procreation that the Catholic ethical framework upholds. In all these cases, the technology is viewed as serving the desires of adults at the expense of the child's fundamental rights and well-being.

Genetic Enhancement of Offspring

The abundance of embryos generated through IVG, combined with advanced genomic sequencing, could usher in an era of what Greely (2016) calls “Easy PGT,” where prospective parents select embryos not only to avoid disease but to select for desired traits such as intelligence, physical appearance, or athletic ability (Cohen and Adashi 2025; Pugeda 2022).

This pursuit of genetic enhancement is universally condemned in Catholic bioethics. It represents the ultimate commodification of human life, where children are treated as products subject to quality control rather than gifts to be received with unconditional love (Haas 1998; McTavish 2022). Pugeda (2022) argues that when IVG is seen within the framework of the so-called “Principle of Procreative Beneficence”—which holds that parents have significant moral reason to select the most advantaged possible child (Savulescu 2007)—the outcome is nothing less than a form of disguised eugenics (Chia 2018; Pugeda 2022). Catholic theology insists that human dignity is inherent and not dependent on possessing specific genetic traits or capabilities (Congregation for the Doctrine of the Faith 2008; John Paul II 1995). The creation of an “arms race” in genetic selection, where parents iteratively seek to ensure their child is not placed at a competitive disadvantage, is viewed as a profound distortion of the meaning of parenthood and the unconditional love that children deserve.

The Deconstruction of Biological Parentage

One of the most profound consequences of IVG is its potential to deconstruct the concept of biological parentage. In the Christian understanding, procreation is inherently tied to the embodied reality of male and female (Catechism of the Catholic Church 1997; Second Vatican Council 1965). The biological connection between parents and children is not viewed as a mere accident of nature but as a meaningful aspect of human identity, reflecting the relational nature of the Creator. IVG, by rendering gametes interchangeable and independent of the reproductive organs, threatens to reduce parentage to a purely genetic or intentional construct (Cohen and Adashi 2025). Kass (1972), writing about reproductive technologies more generally, warned that they may turn “procreation into manufacture” and that such technologies, where the manufacturer “stands above [the product] by his will and creative prowess,” are “profoundly dehumanizing, no matter how good the product.”

Theological reflections on embodiment emphasize that humans are not merely spirits inhabiting bodies but unified psychosomatic wholes. When reproduction is entirely divorced from the physical acts of intimacy and gestation, it risks alienating individuals from their own bodies and the bodies of their offspring (McTavish 2022). This alienation is particularly concerning in the context of IVG, where the “raw material” for human life could be obtained from a simple skin biopsy, further distancing the origin of life from the profound mystery of conception (Pugeda 2022).

Social Justice and the Commodification of Life

Catholic social teaching places a strong emphasis on justice, equity, and a preferential option for the vulnerable. The development and potential clinical application of IVG raise significant concerns regarding the equitable distribution of healthcare resources (Cohen and Adashi 2025). IVG is an incredibly complex and expensive technology, and its benefits, if realized, would likely be accessible only to the affluent, exacerbating existing inequalities in reproductive medicine (Landecker and Clark 2026; Taylor, Apelian, and Adashi 2025).

Moreover, the commercialization of IVG threatens to turn human reproduction into a lucrative industry, where gametes, embryos, and even the resulting children are treated as commodities (National Catholic Register 2025). The Catholic tradition has consistently warned against the reduction of human life to an object of economic exchange (Congregation for the Doctrine of the Faith 1987). When the creation of life becomes a commercial enterprise, the inherent dignity of the child is compromised, and the child risks being viewed as a product designed to meet the specifications of consumer-parents (Haas 1998; Pacholczyk 2024).

The Illusion of Total Control

At its core, the pursuit of IVG reflects a deeply ingrained modern desire for total control over the human condition (Meaney 2023). The promise of IVG is the ability to dictate the terms of reproduction, eliminating the uncertainties of natural conception, overcoming biological limits, and potentially engineering the genetic makeup of future generations (Pugeda 2022; Cohen and Adashi 2025). Catholic theology recognizes the human desire for mastery as a manifestation of original sin—the temptation to “be like God” (Genesis 3:5). While the responsible use of medical technology is a legitimate exercise of human stewardship, the attempt to completely dominate the origins of human life is viewed as an overstepping of bounds (John Paul II 1995; Pacholczyk 2025).

The acceptance of the child as a gift requires a posture of humility and openness, recognizing that human life is ultimately a mystery entrusted to our care by the Creator (Meaney 2023; Burbidge 2025). This theological posture of receptivity stands in sharp contrast to the consumerist logic of IVG, which frames reproduction as a project of human self-determination rather than a participation in divine creativity.