There are some nutrient sources - such as selenomethionine, a widely used form of selenium, boron for bone health and chromium yeast for regulating blood sugar - that aren't on the list.

In its simplest form fermentation processes can be just the mixing of microorganisms with a nutrient broth and allowing the components to react.

The thyroid gland readily absorbs iodine in any form, (including radioactive iodine...) and it retains this element as a nutrient for extended periods.