Black Walnut, Juglans nigra, is a rich source of the trace mineral chromium and is also high in organic iodine. (store.newwayherbs.com)
Consumption of high amounts of inorganic iodine (as in iodized salt or iodine - fortified bread) as well as of organic iodine (as in kelp) can cause thyroid problems similar to those of iodine deficiency, including goiter.5 (westonaprice.org)
Large proportion of natural, organic iodine aiding in maintaining a healthy thyroid function (not to be compared with the toxic substitute added to table salt. (thebestofrawfood.com)