In the U.S. vitamin D levels are usually reported with a different measure using nanograms per milliliter.

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And from this year, new facilities are to meet the tougher international standard of 0.1 nanograms per cubic meter.

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Reporting in the journal Marine Drugs, the authors found BMAA concentrations ranging from 144 to 1, 838 nanograms per milligram.

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It spews 500 nanograms of dioxin per cubic meter of fume, more than six times the Japanese safe level of 80 nanograms.

CNN: Warning -- this garbage is dangerous

The study, which only dealt with localized tumors, leaves open the possibility that men with very high PSA levels - greater than 10 nanograms per milliliter - may still benefit from surgery.

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Even though his PSA levels were still below the 4.0 nanograms per milliliter threshold considered to be a positive PSA score, Stephen, who asked that we only use his first name, said he just wanted to eliminate the cancer risk.

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