The essential nutrient minerals for humans, listed in order
by weight needed to be at the Recommended
Dietary Allowance or Adequate Intake are potassium, chlorine, sodium, calcium, phosphorus, magnesium, iron, zinc, manganese, copper,
iodine, chromium, molybdenum, selenium and cobalt (the last as a component of vitamin B12).
(12) http://jn.nutrition.org/content/127/6/1214.full
Dietary Iodine and Selenium Interact To Affect Thyroid Hormone Metabolism of Rats
by Christine S. Hotz, Dennis W. fitzpatrick, Keith D. Trick, and Mary R. L'Abbé