Well, one potential way that one could determine if this could yet be down to environmental contaminants would be to look at diet. Nordic and Northern European

Well, one potential way that one could determine if this could yet be down to environmental contaminants would be to look at diet. Nordic and Northern European states have far more seafood, particularly bottom feeding seafood like plaice and sole, which are fantastic bioaccumulators of nastiness, in their diet than the average American [1] - and marine environments ultimately accumulate a large proportion of fun things like micro plastics, and therefore BPA and phthalates, which have been shown to have a negative impact on gestatory brain development. [2] It would be illuminating to see what correlation exists, as it may well be causative. [1] https://www.greenfacts.org/en/fisheries/figtableboxes/figure-42.htm https://www.greenfacts.org/en/fisheries/figtableboxes/figure... [2] https://www.scimex.org/newsfeed/common-plastic-chemicals-affect-rat-brain-development https://www.scimex.org/newsfeed/common-plastic-chemicals-aff...