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Posted Wed Sep 2 2009: from Environmental Health News:
A bad mix: exposure may be 'safe' only with one chemical at a time
Exposure to a mixture of environmental chemicals is far more harmful to male rats than exposure to the individual chemicals would predict, even when the level of each contaminant in the mixture causes no effect by itself. The results indicate that assessing the risk of chemicals one-compound-at-a-time will underestimate potential harm. People are exposed to hundreds of chemicals at a time, if not more. People could be affected by mixtures of chemicals that are currently considered "safe" based on their individual toxicities.... Because people are exposed to all sorts of chemical mixes -- from environmental sources such as food, water, prescription drugs, air and dust -- it is not possible to test for all possible chemical combinations. Therefore, regulators use information based on the toxicities of individual chemicals to determine safe exposures.
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'Doc Michael says:
We much prefer using the findings from Duh! Laboratories, to predict our terror. Or, wait -- perhaps "Doh! Laboratories is more appropriate!

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