The Short Answer: Louise Joy Brown was born weighing 5lb 12oz by planned Caesarean section. Her birth was the result of years of research by Dr Patrick Steptoe and Professor Robert Edwards, and it gave hope to millions of couples struggling with infertility worldwide.

Before Louise Brown, the idea of fertilising a human egg outside the body and implanting it successfully was considered medically impossible by many. The researchers behind IVF faced years of scepticism, ethical opposition, and failed attempts before achieving the breakthrough that would transform reproductive medicine.

The Pioneers

Patrick Steptoe was a gynaecologist at Oldham General Hospital who pioneered laparoscopic techniques for egg retrieval. Robert Edwards was a Cambridge physiologist who had spent years studying human fertilisation in the laboratory. Together, they formed a partnership that would change millions of lives.

Their work was largely self-funded after the Medical Research Council rejected their grant application in 1971. They persisted through over 100 failed attempts before Lesley Brown, Louise's mother, became pregnant through IVF in November 1977.

The Birth That Changed Everything

Louise was delivered by Caesarean section at 11:47pm on 25 July 1978. The news made headlines around the world. Some welcomed it as a miracle of science; others raised ethical and religious objections. Steptoe and Edwards received hate mail alongside congratulations.

Today, IVF is one of the most common assisted reproductive technologies. Approximately 2% of all babies born in the UK each year are conceived through IVF, and the figure is similar across much of Europe and North America.

Sources

• Steptoe PC, Edwards RG, Birth after reimplantation of a human embryo, The Lancet, 1978.
• Human Fertilisation and Embryology Authority (HFEA) statistics.