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Baby born from 21-year-old sperm
The boy was conceived after four attempts at IVF
A couple have given birth to a baby boy who was conceived using 21-year-old sperm, it has emerged.

Doctors at St Mary's Hospital in Manchester, where the baby was born, said the age of the sperm may make it a world record.

The boy's father had his sperm frozen when he was 17 before undergoing treatment for testicular cancer, which made him infertile.

Doctors said the case showed that freezing sperm is safe and worthwhile.

Details of the case were published in the journal Human Reproduction.

The man's sperm was frozen until he got married and wanted to start a family.

It was thawed and then injected into his partner's eggs. The baby was conceived after their fourth attempt at IVF. read on