Multiple studies have found that women usually favor masculine features, such as prominent jaws, high muscle mass, and low-pitched voices.⁠ The theory is that these traits signal a high-quality mate—for instance, it's been proposed that masculine men generally have more robust amounts of sperm. But this 2012 research revealed that, while deep voices are attractive to women, low-pitched men tended to have lower concentrations of sperm in their ejaculate.⁠ ⁠ The finding suggested that men who evolutionarily invest most of their energy into making themselves attractive to females may suffer deficiencies in other areas—in this case, sperm counts.⁠ For instance, the male hormone testosterone, which lowers voice pitch, can thwart sperm production, according to study leader Leigh Simmons, an evolutionary biologist at the University of Western Australia.⁠ ⁠ _____⁠ ⁠ #deepvoice #men #voice #voices #higherpitched #science #biology