I see this a lot, and I think science illiteracy coupled with environmentalist hysteria is partially to blame.  Ex. People freaking out about heavy metal particles. Never mind that trace amounts of them, like lead and arsenic, are perfectly (and naturally) normal in food, arsenic is actually required to live, and the body naturally produces small amount of formaldehyde. It's very much the "IF YOU CAN'T PRONOUNCE IT, THEN IT'S EVIL" mentality.