4. Pre-washed and pre-cut vegetables
Sure, the convenience of not having to wash and chop your vegetables and fruits is nice, but Marler argues that all of the additional processes they're exposed to before they actually hit your plate just increases the risk of being exposed to contaminants. For that reason, he said, "I avoid these like the plague." Meanwhile, you probably avoid chopping your own carrots like the plague. To each his own.
5. Raw sprouts
Uncooked sprouts -- like alfalfa, clover, and radish sprouts -- have been linked to dozens of bacteria outbreaks in the last few decades. Out of an abundance of caution, and probably a sprinkle of paranoia, Marler said he doesn't eat them at all. We just don't eat them because they're, well, sprouts.