Article I was reading said:
The four minerals, sodium, potassium, calcium, and magnesium are next to each other in the Periodic Table and form a square on the left side. There are strong interactions between these four minerals. The balances between these four minerals seems to be critical to health and are probably very critical for thyroid health. Excess amounts or deficiencies of any one of the four may severely disrupt thyroid function.
Additionally there seem to be interactions between these four minerals and copper and zinc, which are two metallic minerals with critical thyroid functions. It seems that a copper deficiency interferes with the proper functioning of both potassium and magnesium, and zinc seems more related to sodium and calcium metabolism. Also all of these minerals seem involved in either the production, degradation, or cellular response to thyroid hormone.
Would post the link, but you know...
Anywho, how does one know if they are deficient in any of these minerals?
I taking a good daily multi-vitamin all you need to do?