Polyester Underwear and Testosterone: The Shocking Truth Synthetic fabrics have become a staple in our wardrobes since the 1960s, enveloping our bodies for nearly a century. This widespread adoption, however, has had a concerning impact. In the industrialized world, average sperm counts have declined by a staggering 52.4% between 1973 and 2011. The culprit? Polyester […]