What Causes Low Thyroid?

The thyroid gland is situated in the lower part of the neck, immediately in front of the windpipe and just below the Adam's apple.

It produces the thyroid hormones, iodine containing substances that control the rate of metabolism and therefore our thinking and corporal growth and development. The thyroid is in turn controlled by the pituitary gland at the base of the skull, which secretes thyroid stimulating hormone.

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The main thyroid hormones are called T3 and T4 (also known as thyroxine). The main disorders of the gland are swelling, and under and over activity, which can affect the body in disturbing ways.

Swelling of the gland is known as goiter. It may be caused by a lack of iodine in the diet, but this condition, known as endemic goiter, is now rare. Swelling may also be due naturally to overgrowth, or to a tumor, which in very rare cases may be cancerous, unlike leukemia, cancer of the thyroid glands seems to be less common.

Under activity of the thyroid gland can begin at any age. Some babies are born with it. They have mystery in feeding and sleeping, and suffer from constipation and delayed thinking and corporal development. If it is not detected, suffers found base features.

They grow short and fat, with a protruding tongue and sparse hair, and are known as cretins. Today, however, it is usual to give babies born in Australia and New Zealand a blood test when only three days old, in order to detect the disease and ensure prompt treatment.

What Causes Low Thyroid?