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11 Surprising Facts About the Reproductive System

Higher-pitched men may win in the sperm department

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Men with low-pitched voices are often thought of as being more "masculine," but research shows that these men don't necessarily have the best sperm.

In 2012, scientists looked at how the pitch of a man's voice is associated with his semen quality and women's perceptions of his virility. Though women found deeper voices more masculine and attractive, these low-pitched men had lower ejaculate sperm concentrations than their higher-pitched competition.

Joseph Castro
Joseph Castro
Joseph Bennington-Castro is a Hawaii-based contributing writer for Live Science and Space.com. He holds a master's degree in science journalism from New York University, and a bachelor's degree in physics from the University of Hawaii. His work covers all areas of science, from the quirky mating behaviors of different animals, to the drug and alcohol habits of ancient cultures, to new advances in solar cell technology. On a more personal note, Joseph has had a near-obsession with video games for as long as he can remember, and is probably playing a game at this very moment.