Don't grab these unhealthy American groceries on your next trip to the ... The same is true for prepackaged foods like store-bought smoothies, salad kits, and instant oatmeal. This list was compiled using health data, government information, and product websites to bring you a comprehensive run-down of might-as-well-be-junk foods that are dressing up healthy. From Spam to Smartfood, here are 45 common American grocery ...