Smelly necklace (I gave it this name)is actually a cold compress that was recommended for my goiter by a macrobiotic doctor.
Well, it certainly can't hurt me, so... let's do it regularly!
Recipe: Grate 70 % of potato and cut into small pieces 30 % of white cabbage (small quantities),
mix them together, put on a cotton cloth & veggie mix side directly on your skin, around your front neck, where thyroid is.
For at least an hour, once per day. Three days in a row and then two days nothing; and repeat...
PS: I don't grate & cut them, I put them in a small mixer... ;-)
For a cotton cloth, I use small pieces of an old bed sheet,
and to fix it with a mix to & around my neck, I use a three folded back or front of old XL tee-shirts (Berry's, of course ;-)