Whats the average life span of a Ipod Shuffle 2nd generation? what I mean is how long should the battery last and charge for before it compleatly dies. HP Pavilion a510n 2.10ghz athlon 3000+, Windows XP, Ipod Shuffle 2nd generation Blue.
Graves disease is the most common cause of hyperthyroidism. Graves disease is an autoimmune disorder in which antibodies are produced that bind to the TSH receptor.s diagrammed in the figure, when there is less T3 and T4, there is reduced negative feedback inhibition of secretion of the tropic hormones, TRH (thyrotropin releasing hormone; released by the hypothalamus) and TSH (thyroid stimulating hormone or thyrotropin; released by the anterior pituitary).
Another sign of Graves' disease is hyperthyroidism, i.e., overproduction of the thyroid hormones T3 and T4. Normal thyroid levels are also seen, and occasionally also hypothyroidism, which may assist in causing goitre (though it is not the cause of the Graves' disease). Hyperthyroidism in Graves' disease is confirmed, as with any other cause of hyperthyroidism, by measuring elevated blood levels of free (unbound) T3 and T4.