What does feminizing mean?
- feminine features such as gynocomastia (used to be very rare, now quite common)
- decrease in sperm counts across the male population, which has been well documented.
- statistically significant decreases in traditionally male ‘problems’ (violent crime being one obvious one), but also aggressiveness in general. Well documented, but there are many possible causes there.
- behaviors that change from stereotypical male behaviors (which female->male trans folks I’ve know say were clearly from testosterone) towards more female ones. Including aggressive seeking of sex, towards general ‘meh’.
As to what is causing it or why, who knows - but that’s what it means, and it does seem to be a thing.
It is well documented that people with lead exposure during their developmental period have problems including more predisposition to violence and crime.