I don't doubt that #4 is probably technically true and environmentally relevant, but I suspect most people's health issues are far more excess-related than defi

I don't doubt that #4 is probably technically true and environmentally relevant, but I suspect most people's health issues are far more excess-related than deficiency related, even if there's a few specific things most people might not have enough of, so 1-3 are probably a far bigger deal.