Lead? Lead was used for millenia. The Romans made copious use of lead.
And the Romans had many children?
Humans had many offspring for millennia, humanity has had fewer offspring since lead has been banned.
I'm not the one proposing the theory, but that's a correlation.
And the Romans had many children?
Humans had many offspring for millennia, humanity has had fewer offspring since lead has been banned.
I'm not the one proposing the theory, but that's a correlation.