[sp3000]

Bingo. One aspect of this is sleep (quantity and quality). The drop in testosterone is likely multifactorial though: sleep, nutrition, movement, stress -> all contributors that have the potential to decrease testosterone levels and creat hormone imbalances.

[asdff]

Stress is also on the rise, especially among gen Z:

https://www.apa.org/news/press/releases/stress/2020/report-o...

Which shouldn't be surprising given the quality of life a typical worker enjoys today vs in decades past when cost of living was much more in line with wages.

[presentation]

Also, having recently watched The Social Dilemma, social media might be stressing people out too.