A cocktail of dangerous chemicals has been found in the blood of every person tested in a study in the U.K., and everyone in the U.S. probably has them too. The 77 chemicals found include PCBs, which can affect gender, and a common fire retardant.

Shaoni Bhattacharya quotes toxicologist Matthew Wilkinson as saying, “Every single person we monitored had a range of these chemicals.” Some of these chemicals persist in the blood for a very long time, as shown by the fact that 99% of the people in the study tested positive for DDT, which has been banned for decades in the U.K. Animal tests show these chemicals can be harmful at high levels, but no one knows the effects of carrying low levels of these chemicals around in your blood for a long time.

Maybe we need to leave our polluted bodies behind occasionally.

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