Britannica Sources used in this answer

Who achieved the first successful human birth using in vitro fertilization and when did it occur?

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.

The first successful human birth achieved through in vitro fertilization (IVF) was Louise Brown, who was born on July 25, 1978, in Lancashire, England.12

This medical milestone was made possible by the collaborative work of British medical researcher Robert Edwards and British gynecologist Patrick Steptoe. After years of research, they successfully fertilized an egg in a laboratory setting and implanted the resulting embryo into the mother, Lesley Brown, whose infertility was caused by blocked fallopian tubes.132

While this breakthrough offered hope to many, it is essential to recognize that the development of IVF has consistently raised significant ethical questions regarding the status of embryos and the moral implications of reproductive technologies. Affirming the dignity of human life remains a fundamental ethical principle that must guide the ongoing application and evolution of these medical practices.13