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A comment on Testosterone levels show steady decrease among young US men. Parent comment

Re:Testosterone levels show steady decrease among young US men by dhruvkar on Thursday January 14, 2021 @02:46PM (#25781411)
I'm 33 but grew up in a developing nation. This was common starting at around age 8. The boys fought pretty much every week. Exactly like you describe, there were rankings, within the class and in the larger grade.

This was common for other people who I met later that from developing nations. Not sure if this still happens anymore.

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Re:Testosterone levels show steady decrease among young US men by PaulDavisThe1st on Thursday January 14, 2021 @05:10PM (#25783417)
Probably lead.

https://www.motherjones.com/kevin-drum/2018/02/an-updated-le...

[ EDIT for the downvoters: this isn't a joke or some snide remark. The lead hypothesis as the basis for the huge spike in violence in various societies, especially among teenagers and young adults, has huge amounts of evidence. Correlation is not causation, but we even have a plausible causal mechanism. ]

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