feet.3 And your intestines? Counting all the little folds, some scientists estimate that your gut would blanket thousands of square feet,4 vastly more expansive than your skin and lungs combined. What you eat may very well be your primary interface with the outside world. This means that regardless of the carcinogens that could be lurking in the environment, your greatest exposure may be through your diet. Three of the most common cancers of the digestive tract kill approximately one hundred thousand Americans each year. Colorectal (colon and rectal) cancer, which claims fifty thousand lives
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