Cochineal extract, diacetyl, teriary butylhydroquinone, BHA, HFCS, MSG—it’s not just knowing how to pronounce what’s in your food, it’s knowing what it does and how it can affect you that matters most. But with so many processed foods on the supermarket shelves and additives showing up in the most unlikely foods, that’s certainly a tall order. An A-to-Z Guide to...