I want , I want to review some data to talk about the onset of Menzies menstruation that is puberty in females according to country and according to age over the last 100 or more years . So what are the general trends in terms of the onset of puberty in females ? Well , that's an easy one to answer over the last 100 years or so .
What we see is that the average age of the onset of female puberty in 1850 in Norway was 17 years old , whereas in 1970 it's 13 years old . So this is a dramatic acceleration of the onset of puberty and you see a similar trend in other countries as well . So if we were to look in , uh for instance , in the UK .
Well , that's an easy one to answer over the last 100 years or so . The onset of puberty has been occurring much earlier with each passing decade . It's really an incredible set of statistics .
Um I'll , I will provide a link to these data since I know a number of you are listening and not just uh watching on youtube . Um This is from a study in which the onset of puberty has been analyzed from as early as the 18 fifties , right ? In certain countries , there are data on that out to the 19 seventies and another country starting at about 1900 um extending out to about 1990 .
Unfortunately , they didn't continue to collect data out to uh 2022 . And as a final point , if we were to look at , for instance , in uh Germany and Finland , uh the average uh onset of puberty in 1870 was 16.5 years old . Uh By 1940 it was down to 13.5 years old .
