Saturday, July 23, 2005

Hormesis Breast cancer and DDT

"The adjusted {cancer}odds ratio is ... 0.8 {20% less} (95% confidence interval: 0.5, 1.5) for DDT when the highest {exposure} quartile was compared with the lowest. "

Yale Study

Working with their ancestor one day as a college student, he spritzed the plant with the common herbicide Phosfon, planning to measure how much the poison stunted the plant's growth. But instead of shriveling up, the Phosfon-treated plant grew some 40% taller and leafier than untreated plants.

The herbicide had been mistakenly overdiluted, and thanks to that accident, Ed Calabrese rediscovered a paradox of toxicology that had been in the doghouse since the 1930s: Low doses of a poison can be not merely harmless, but actually beneficial.
Toxicology's "...error of historic proportions."


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