A study carried out by evolutionary biologist Leigh Simmons of the University of Western Australia has revealed that, although women rate deep male voices as more "sexy" and attractive, subjects with low voices produce less sperm in semen than men with higher voices. To reach this conclusion, they have carried out an experiment with 32 men and 30 women in which, in addition to assessing female perception based on tone of voice, they analyzed the quality of sperm and the number of sperm in semen samples from the men. participants.
According to scientists in an article published in the journal Plos One , this phenomenon could be explained because, although testosterone plays a key role in sperm formation and is directly related to deep male voices, too much testosterone can slow down production. sperm .
