we looked at the old traditional POPs

"In your blood sample, we looked at the old traditional POPs which have been regulated and off the market so they haven't been used for many years," he explained. My results showed traces of DDE, a metabolite of the pesticide DDT that was used until the 1970s as well as low levels of PCBs. "It's a little bit frightening that if you get these chemicals in society, it's very difficult to get rid of them." Despite bans, these chemicals still persist, as many don't degrade easily.