Why do human males develop facial hair?

Distinct from other apes,
human males develop facial hair at puberty that creates a beard and mustache. Then many men shave it off. If you’ve ever wanted to know why, here are some recent hypotheses.

According to the BBC online, “beards probably evolved at least partly to help men boost their standing among other men.” because women are not more interested in men with beards. “To reproduce, it’s often not enough to simply be attractive. You also have to compete with the same sex for mating opportunities.”

“A man’s ability to grow a fulsome beard isn’t actually neatly linkedto his testosterone levels. “

“Both men and women perceive men with beards as olderstronger and more aggressive than others. And dominant men can get more mating opportunities by intimidating rivals to stand aside.”

Figure 1. Percent of body hair on males worldwide appease here in darker tones. Both equatorial and polar humans have less hair. Mediterranean and Scandinavian men have more hair covering their bodies.

Figure 1. Percent of body hair on males worldwide appease here in darker tones. Both equatorial and extreme polar humans have less hair. Mediterranean and Scandinavian men have more hair.

“Men on average also think their body should be more muscular than women report that they want, while women on average believe they need to be thinner and wear more make-up than men report that they want.”

“Make-up use, average body composition, and even the very ability to grow facial hair all differ enormously across the world – meaning we could get different results elsewhere.”

This BBC article originally appeared on The Conversation (links below).


References
Dixson A DSc, Dixson B and Anderson M 2005. Sexual Selection and the Evolution of Visually Conspicuous Sexually Dimorphic Traits in Male Monkeys, Apes, and Human Beings, Annual Review of Sex Research, 16:1, 1-19, DOI: 10.1080/10532528.2005.10559826

http://www.bbc.com
https://theconversation.com

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