Hypothyroidism is a condition in which the thyroid gland
produces insufficient amount of hormone thyroxine.
Iodine deficiency is the main cause of
hypothyroidism. However, it can also be caused due to inflammation of the
thyroid gland, pituitary or hypothalamic disease or certain medications.

Since
the main purpose of thyroid hormone is to maintain the body's metabolism, people
with hypothyroidism will have
symptoms
associated with a slow metabolism. The symptoms of are subtle and
non-specific.
Blood tests measuring
the T3, T4 and TSH levels can help confirm the diagnosis of hypothyroidism.
Hypothyroidism can be easily and completely treated
with
thyroid hormone replacement.