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Men whose serum alpha-tocopherol levels at the beginning of the study were among the top one-fifth of participants were found to have a 33 percent lower risk of dying of prostate cancer compared with those whose levels were in the lowest fifth. For those whose levels were highest at the third year of the study, a 20 percent lower risk existed. Men who received alpha-tocopherol supplements in the trial and whose baseline levels of vitamin E were highest experienced the lowest risk of prostate cancer mortality,
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OK then, those with already high levels (no mercury) did well even after giving them more (still no mercury).
Those with low levels (mercury poisoned) did the worst while those with mercury poisoning and supplementation did somewhat better...