Thyroid conditions are generally caused either due to insufficient or excess concentration of free thyroid hormones. Hypothyroidism's deficiency of thyroid hormones can disrupt such things as heart rate, body temperature and all aspects of metabolism most prevalent in older women.
Major symptoms include fatigue, cold sensitivity, constipation, dry skin and unexplained weight gain.
Hyperthyroidism is caused by an excessive concentration of free thyroid hormones, Treatment generally consists of thyroid hormone replacement.
