I got grade B in my Biology O level in 1975 - so that makes me an expert....

I vaguely remember reading that all human embryos [when they are still eggs] start off female,
but have the potential to change into tiny little bloke babies
if one of Daddies loud mouthed aggressive male chromosome spunk tadpoles
competes and wins the race to barge into the egg first.

So yeah it makes much sense that environmental pollutants
can disrupt, damage, and mutate the delicate balance
of genetic precarious male or female default chemistry in our bollock bags... 😬