Historical changes in serum PCB and DDT levels in an environmentally-exposed cohort

A previously characterized cohort of 115 Great Lakes fisheaters and 95 non-fisheating controls was re-examined in 1989 to evaluate changes that had occurred in serum PCB and DDT levels since the 1982 study. Substantial and significant decreases in mean serum DDT levels had occurred in both fisheaters (25.8 ppb vs 15.6 ppb) and controls (9.6 ppb vs 6.8 ppb) ppb=ng/gPeer Reviewedhttp://deepblue.lib.umich.edu/bitstream/2027.42/48077/1/244_2004_Article_BF00212554.pd