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
It's Put in Salt to Help Maintain Thyroid Health
Answer
IODINE
Word Meaning:
IODINE — A chemical element (symbol: I) with an atomic number of 53; one of the halogens.
Definitions from Wiktionary.