PCB cancer connection made

Researchers have linked exposure to organochlorine compounds to an increased risk of developing colorectal cancer. A French-Spanish study analysed data on 132 cases and 76 controls that higher plasma concentrations of mono-ortho polychlorinated biphenyls (PCBs) correlated with an elevated risk of colorectal cancer. The research team suggests that the toxic action of these particular PCBs is linked specifically to the genetic mutations seen in the study and conclude that this implies a causal link between this type of PCB and the disease.