Men with high IQ have healthier sperm

Researchers have also suggested that being smart and funny might have developed as a signal to women looking for a mate with healthy genes, reports The Daily Telegraph.

The study examined 400 Vietnam War veterans who were asked to provide sperm samples and also put through extensive mental tests.

The results showed that men who scored high on the series of intelligence tests also boasted high counts of healthy sperm.

Low scorers, on the other hand, had fewer and more "sickly" sperm, the research by Professor Geoffrey Miller of the University of New Mexico found.

Professor Miller, told a conference of the Association for the Study of Animal Behaviour at Oxford University: "“Traits such as language, humour, and intelligence evolved in both sexes, because they were sexually attractive to both sexes.”

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