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A lot of people ask me if I'm OK. I'm capable of crazy - a lot of people are - but I'm OK.

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Sandra Steingraber

The study of how substances alter gene expression is part of the field of epigenetics. Some chemical exposures appear to turn on and turn off genes in ways that disregulate cell growth and predispose for cancer. From this perspective, our genes are less the command-and-control masters of our cells and more like the keys of piano, with the environment as the hands of the pianist.

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