The chemical substances secreted from various parts of the body transfer messages to cells in different parts of the human body.
These chemical messages allow the body to regulate various cell processes such as sleep, growth, blood glucose level, sexual reproduction, and controlling stress.
Hormone that requires iodine for its production:
Thyroid hormones, triiodothyronine (T3) and tetraiodothyronine (T4) need iodine for their production.
These hormones are secreted by thyroid gland.
These hormones are responsible for the regulation of metabolism.