James, interesting and illuminating article, thanks for sharing. Could maybe do with some links where justifying research is quoted, and a little more on the background of how/why you became concerned.

Astoundingly, toxic metals like lithium are still prescribed for some mental health conditions, though apparently this is not a heavy metal. I thought aluminium was OK. Perhaps worryingly, aluminium is still very much a standard material used in the manufacture of cooking pots and pans, especially cheap ones.

Solarpunk

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