hey trapper - just in case you dont see it in the Morgellans forum, here is an idea that backs up your theory [and adds a bit]:
Thyroid health has gone downhill due to nuclear radiation contamination.
Iodine was added to table salt in the 1950s because of nuclear testing - people might notice thyroid damage if Iodine was not added to the diet.
Of course, iodine is just a temporary crutch for thyroids in the presence of radiation, it still damages the gland.
And so, damaged thyroid, plus, as you say, the plastic's PCBs and TBT [a new one, Google it] and heavy metals, and various hydrocarbon toxins was the genesis of Morgellans.
Doesn't it all go together pretty neatly?? Are we onto something??