Health

Tuesday 16 September 2014

The more brothers you have, the faster your sperm swims

Men with more brothers than sisters are likely to have faster swimming sperm and greater fertility, a study suggests.

Scientists assessing the fertility of 500 men found that sperm swimming speed correlated with family make-up.

They found that men who mostly had brothers had faster sperm than those with mostly sisters. The finding was published in the 'Asian Journal of Andrology'.

Irish Independent

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