There are the normal kinds of toxins that your body can break down over time. These are different. But they're still found in plenty of every day household items, fast food and even the water you drink. It's almost impossible to avoid them. The CDC in the United States has said they are a public health concern. But they're still being manufactured, right now, by massive companies.

So what are they? Why do they stick around forever? Why are they still being made despite the fact we know they are harmful? And where, exactly, are they found and how can you best avoid them?

GUEST: Benji Jones, environmental reporter, Vox

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The 'forever chemicals' you probably have inside you