Age a) Alcohol intake b) Marine food c) Smoking d) Beta HCH R square =0.25 0.43     p=0.001 0.13         ns 0.12         ns 0.17        0.025 Chlordanes R square =0.24 0.36     p=0.001 -0.01         ns 0.22       0.026 0.28        <0.001 DDT (sum) R square =0.26 0.44      p<0.0001 0.16         ns 0.16      0.036 0.21        0.006 Hexachlorbenz. R square =0.28 0.40      p<0.0001 -0.2         0.04 0.25        0.001 0.21        0.001 Mirex R square =0.30 0.48      p<0.0001 0.25         0.007 0.18       0.016 0.27       <0.001 PCB (sum) R square =0.33 0.50      p<0.0001 0.13        ns 0.17       0.021 0.25        0.001