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What Is It?Graves' disease is a disorder of the immune system which causes the thyroid gland to become overactive. It is an autoimmune disorder, which means the body's immune system mistakenly attacks the body's own cells instead of protecting them from outside invaders. In Graves' disease, the body's immune system makes abnormal chemicals called immunoglobulins that stimulate the thyroid gland to make too much thyroid hormone. This overactive thyroid state is called hyperthyroidism. Doctors don't know what causes Graves' disease, but the fact that it tends to run in families indicates that the disease may have a genetic (inherited) component. It is possible that the abnormal production of immunoglobulins is triggered by some unknown factor in the environment, and the immune system fails to stop this overproduction because of an inherited defect. Graves' disease affects women more than men. It most frequently strikes between the ages of 20 and 40 but can occur at any age.
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From Health A-Z, Harvard Health Publications. Copyright 2007 by the President and Fellows of Harvard College. All rights reserved. Written permission is required to reproduce, in any manner, in whole or in part, the material contained herein. To make a reprint request, contact Harvard Health Publications. Used with permission of StayWell.
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