Ask the Expert: How long does sperm live outside the body?

Question

How long does sperm live after ejaculation?

Answer

The life span of sperm after ejaculation depends on where they end up.

How long does sperm live inside the body?

It takes somewhere around 69 to 80 days for a sperm to develop in the testes before it moves through the epididymis, which takes at least another 2 days. So, by the time your sperm leave your body, they’re already up to around three months old.

Once sperm is outside your body, they’re vulnerable. Even when semen is collected and analysed straight away in a laboratory, in about half of all samples one out of five sperm will be dead, and one-third not be moving.

How long does sperm live in a woman?

In the vagina, sperm live for two to three days.

In the cervix, sperm can live up to one week.

There’s a report of live sperm being recovered from the fallopian tubes of a woman 25 days after sex, raising the possibility that a pregnancy might be conceived more than three weeks after intercourse

How long does sperm live in a condom?

Sperm ejaculated into condoms can survive for a few hours, whereas sperm on fabric or skin will only survive for a few minutes.

How long can you store sperm?

Under the right conditions, sperm can be kept alive in a laboratory for at least a week. When they’re frozen in a laboratory for storage, sperm can be thawed and revived, for successful use in IVF, many years later.

A/Prof Tim Moss_Author image

Tim Moss

Healthy Male Health Content Manager

Associate Professor Tim Moss has PhD in physiology and more than 20 years’ experience as a biomedical research scientist. Tim stepped away from his successful academic career at the end of 2019, to apply his skills in turning complicated scientific and medical knowledge into information that all people can use to improve their health and wellbeing. Tim has written for crikey.com and Scientific American’s Observations blog, which is far more interesting than his authorship of over 150 academic publications. He has studied science communication at the Alan Alda Centre for Communicating Science in New York, and at the Department of Biological Engineering Communication Lab at MIT in Boston.

Keywords

Sperm health

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