More info and actually data can be found at:
http://socrates.berkeley.edu/mutagen/center.pubs.html
For Proc. Natl. Acad. Sci. USA Classification: Medical Sciences
Contributed by Bruce N. Ames July 17, 1990 Revised:
August 15, 1990 (415) 642-5165 - phone (415) 643-7935 - fax
II. DIETARY PESTICIDES (99.99% ALL NATURAL)
(carcinogens / mutagens / clastogens / coffee)
BRUCE N. AMES*, MARGIE PROFET, AND LOIS SWIRSKY GOLD
Division of Biochemistry and Molecular Biology
Barker Hall
University of California
Berkeley, California 94720
Abbreviations: MTD = maximum tolerated dose. * To whom correspondence
should be addressed.
ABSTRACT
The toxicological significance of exposures to synthetic chemicals is
examined in the context of exposures to
naturally-occurring chemicals. We calculate that 99.99% (by weight) of
the pesticides in the American diet are chemicals that plants produce to
defend themselves. Only 52 natural pesticides have been tested in
high-dose animal cancer tests, and about half (27) are rodent
carcinogens; these 27 are shown to be present in many common foods. We
conclude that natural and synthetic chemicals are equally likely to be
positive in animal cancer tests. We also conclude that at the low doses
of most human exposures the comparative hazards of synthetic pesticide
residues are insignificant.
Tracy, thanks for the original link to the parent site.
Best regards,
Dave Kendra
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