Men and woman who accumulated large amounts of polychlorinated biphenyls (PCBs), primarily through eating Great Lakes fish, exhibit subtle memory problems, according to a new study.
PCBs are oily fluids that have been used principally as insulation in electrical transformers. Because these toxic dioxinlike compounds break down slowly, they persist in the environment for decades and are now slated for a global phaseout (SN: 6/2/01, p.
Log in
Subscribers, enter your e-mail address for full access to the Science News archives and digital editions.