WHAT CAUSES HYPOTHYROID ?
Hypothyroidism, or underactive thyroid disease, is an endocrine disorder characterized by abnormally low levels of thyroid hormones. The metabolic rate–the activity level of the body tissues–is controlled by thyroid hormones. Hypothyroidism causes a sluggish metabolism, provoking symptoms such as decreased energy, weight gain, forgetfulness, dry skin and cold intolerance. The American Association of Clinical Endocrinologists reports that approximately 25 million Americans have hypothyroidism, with older women disproportionately affected.
