The mental decline of normal aging is related to toxic chemicals in the environment, according to new research from Brian Schwartz of Johns Hopkins and Howard Hu of the University of Michigan. PCB’s and lead at low levels show minor changes in the young but increase mental decline as patients age. The difference in mental function is about 5 years as we grow older, due to the lifelong absorption of lead. We offer a challenge test to detect levels of lead and chelation therapy to remove lead if it is elevated. The article appeared in the Associated Press. Click here or on the link above to these authors for more details.