snippet from "A Cancer Therapy"...

From page 116

Then follows bromine, which Tanino has found in thyroids of corpses of hospital patients to be accumulated in 20 fold amount of iodine, if the patient had received bromides during their disease.
The bromine content of the thyroid is a maximum in comparison to other organs with one exception: the wall of the aorta. The loss of Iodine and its various effects on the nervous system should be seriously considered whenever bromide therapy is used. (Funny used on us every day now)

There remain fluorine and arsenic, which have their maximum accumulation in the thyroid on account of their biological electro positivity….