Thought this might have some meaning for us:

from Science News, may 15, 1999 vol 155:309, Dioxin confirmed as a
human carcinogen
based on article in Journal of the National Cancer Institute, May 5
1999

First paragraph:
Nearly everyone in the world carries traces of dioxin.  Some
chemical-plant workers, however, have carried 1,000 times as much
dioxin as other people.  Such high exposures to dioxin in the
workplace pose a cancer risk, a new federal analysis concludes.

Middle of text:
[new calculations indicate] "... there is a dose response - we see a
trend of more disease with more exposure."

Last paragraph:
Ordinarily, to learn more about low-dose risks, he notes, scientists
would call for further research on people with high exposure to the
chemical.  Such research "is unlikely," Hoover says.  Virtually all
the populations that had been heavily exposed "have been studied, and
fortunately, high-level exposures no longer occur," he adds.  Indeed,
people's average blood concentrations of dioxin have fallen to a
quarter of what they were 25 years ago.

Diane Wiessinger, MS, IBCLC  Ithaca, NY

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