The PFAS ('forever chemicals') saga runs on and on. It sounds Medieval, but Jersey residents (UK, Channel Islands) are now being advised to blood let. In the Middle Ages, leeches were commonly used for blood letting. Blood removal was erroneously regarded the 'cure' for a variety of human ailments. Jersey's private drinking water supplies are contaminated by PFASs via water run-off from the busy airport. Fire-fighting foams (largely used in exercises), appear the primary source of pollution. Folk, with dangerously high levels of blood PFASs, are being urged to undergo medical blood letting. This would be done by blood donor teams rather by leeches. The extracted blood couldn't, of course, be used in transfusions. 'Patients', however, can replace it relatively quickly, reducing their blood PFAS levels (https://www.theguardian.com/uk-news/2025/jan/16/bloodletting-recommended-for-jersey-residents-after-pfas-contamination). This seems to be the shape of things to come. PFASs are now a wide-spread threat to human health. Their usage needs to be strongly curtailed.
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