Some plastics
Plastics can be dangerous, especially when they leach chemicals out through scratches or cracks in a container. BPA is a synthetic estrogen that has been used in many plastics and resins since the 1960s. BPA resins can be used inside products like metal food cans as sealants while polycarbonate BPA plastics can include water bottles and food storage containers.
BPA even shows up on the shiny side of receipt paper to stabilize the ink. While many plastics manufacturers have started labeling their products “BPA-free,” there’s still a lot of the breast- and prostate-cancer-causing stuff around.
