Britannica Sources used in this answer

How can donor eggs be used in in vitro fertilization for older women?

Created from Britannica articles using AI. AI can make mistakes, so verify using Britannica articles.

Diagram showing the female reproductive system with labeled ovaries, fallopian tubes, uterus, and vagina, alongside hormone pathways and the process from ovulation to fertilization and early embryo development. — infertility Major structures and hormones involved in the initiation of pregnancy. Also seen, at right, is the development of an egg cell (ovum) from follicle to embryo.

For older women, the use of donor eggs in in vitro fertilization (IVF) is a recognized method to overcome age-related declines in fertility.1

As women age, particularly from their mid-30s onward, there is a natural reduction in both the quantity and quality of their eggs, which increases the risk of chromosomal abnormalities in embryos and higher rates of miscarriage. Because these challenges are primarily linked to the quality of the egg rather than the woman’s uterine environment, using a donor egg from a younger woman can significantly improve the chances of a successful pregnancy.1

In this procedure, the donor egg is fertilized with the male partner's sperm in a laboratory setting. The resulting embryo is then transferred into the older woman's uterus, which has been prepared with progesterone to support implantation.2

While this approach is effective, it is important to acknowledge the ethical complexity surrounding assisted reproduction. The use of donor gametes and the broader commercialization of fertility services raise significant questions regarding equity, informed consent, and the moral implications of separating reproduction from the marital context. Ethical medical practice requires that these procedures be conducted with transparency and a commitment to the well-being of all parties involved.2