HUMAN NUTRITION

Detailed explanation-1: -Swelling in the neck Swelling in the front of the neck is the most common symptom of an iodine deficiency. This is called a goiter and occurs when the thyroid gland grows too big. The thyroid gland is a small, butterfly-shaped gland in the front of your neck.

Detailed explanation-2: -An underactive thyroid, then, might trigger nonspecific symptoms such as fatigue, weight gain, hair loss, constipation and feeling cold. Newborns are tested for iodine levels as part of general health screenings shortly after birth.

Detailed explanation-3: -An insufficient supply of thyroid hormones to the developing brain may result in mental retardation. Brain damage and irreversible mental retardation are the most important disorders induced by iodine deficiency. Daily consumption of salt fortified with iodine is a proven effective strategy for prevention of IDD.