name the hormone secreted by thyroid gland and state its functions. why is it improtant for us to iodised salt in ourdeit name the disease caused due to deficiency of iodine and mention its symptoms

@dinesh:- Your friend is correct. Kindly follow. I want to add that It is important to have iodized salt in our diet because iodine is required for the synthesis of a hormone called thyroxine. Thyroxine is a very important hormone required metabolism, growth and development of body and brain. Iodine deficiency can result in various disorders like goitre, so it is necessary to consume iodized salt.

@khwaish:- Good job. Keep posting!!