It's Put in Salt to Help Maintain Thyroid Health

This page is the CodyCross answer for the clue below from Taking Care of Our Planet, Group 1570, Puzzle 5 (Alternative Materials).

Question is: It's Put in Salt to Help Maintain Thyroid Health

and the answer is: IODINE

Word Meaning:

IODINE — A chemical element (symbol: I) with an atomic number of 53; one of the halogens.

Definitions from Wiktionary.

It's put in salt to help maintain thyroid health — CodyCross Answer | CodyCross Solutions