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The Clean 15: Foods with Low Pesticide ResidueThe Centers for Disease Control and Prevention has released its latest assessment of the chemicals we’re all carrying around in our bodies. The biomonitoring study is the most comprehensive in the world, measuring 212 chemicals in the blood and urine of 8,000 Americans. That’s more than 40% more chemicals than have ever been tested for before.

The results: You can find 212 chemicals in the blood and urine of Americans if you look for them.

But what does it mean for your health? The CDC highlighted a few chemicals because they are both widespread — found in all or most people tested — and potentially harmful. Here’s a look at what they are and how you can try to avoid them.