Question

why is iodised salt necessary for our body?

Answer 1

this is because due to deficiency of iodine goitre is caused . In goitre Thyroid gland enlarges due to swelling

Answer 2

Answer:

Thanks for asking the question.

It is very important to have iodized salt in our diet because iodine is important for the synthesis of a hormone, called thyroxin.

Explanation:

It is a very important hormone as it helps in metabolism, growth and development of body and brain.  Our body can't produce thyroxin on its own, so iodine is needed for its production. 

Hope I helped.