12. Nonorganic potatoes
Much like apples, conventionally grown potatoes are full of nasty pesticides. What’s more, potatoes tend to absorb many of these toxins, so even if you peel your potatoes, you’re still likely ingesting all sorts of undesirable synthetic chemicals. Also like apples, organic potatoes are easy to find and not overly expensive, making them the obvious choice when you’ve gotta have some spuds.