@hyde 12 has almost always been the norm and the slight shrink now is probably just due to shifting ethnic demographics. Blacks and hispanics mature faster than whites
@hyde
What’s really interesting, though, is that this getting of periods when you’re sixteen is not the archetypal human state of nature either. It was kind of a blip that happened at the beginning of modern times—a retardation that followed a deterioration of living conditions even as the march of human progress achieved lots of impressive milestones.
https://www.lastwordonnothing.com/2018/01/02/the-historically-slippery-age-of-puberty/
The continued reduction in the age of onset of puberty should not be treated as a biological anomaly. It is likely that some 20 000 years ago, humans had already evolved to experience menarche at around 12 years and at present many countries are moving back to this position.
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2465479/
@hyde There is a later age of onset in Asian populations compared to the West.[better source needed][3] The average age of menarche is about 12.7 years in Canada,[better source needed][4] and 12.9 in the United Kingdom.[5] A study of girls in Istanbul, Turkey, found the median age at menarche to be 12.7 years.[better source needed][6] In the United States, an analysis of 10,590 women aged 15–44 taken from the 2013–2017 round of the CDC’s National Survey of Family Growth found a median age of 11.9 years (down from 12.1 in 1995), with a mean of 12.5 years (down from 12.6).[7]
It's really not
I still firmly believe its going unnaturally too far to the other direction