Hyperthyroidism is a condition where the thyroid gland overproduces one or both types of thyroid hormones needed to regulate the metabolism and other functions of the <br /> <br />body. Those with hyperthyroidism can experience anxiety, weight loss, and a fast heart beat without treatment for the condition more information visit our video : http://www.youtube.com/watch?v=tNMYmt2JxXo
