Most likely, and perhaps one of the biggest causes of cancer...there certainly is a lot more in children...unless you can raise all your own, slaughter and process all your own,
we are at the mercy of growers and processors....Even eating "fresh" is hazardous...
weed killers, and pest control chemicals are in the dirt and then transferred into the food..

Even in co ops where much is grown for "farmers Markets" and Natural food...chemicals are used.....It is a sad situation..