If we consider that most people use way too much plastic it's pretty much guaranteed that some of it makes it into their body. It starts with plastic cutting boards, plastic cooking tools, plastic wrapped vegetables and fruits all the way to beverages in plastic bottles, plastic cutlery etc etc. I do doubt that we have it in our balls but I'm not a doctor.

As for mold, we consume that with fruits and vegetables and we should detox once per year. As for parasites, from meat and veg again. I do a worm cure once per year because of that and I got rid of tapeworms more than once in my life.