Hyperthyroidism (overactive thyroid) is a condition in which your thyroid gland produces too much of the hormone thyroxine.
While stress is an important factor in hyperthyroidism, it’s not the only one: the autoimmune system can also come into play by producing antibodies that work against the thyroid. Slow-onset food allergies can also contribute to hyperthyroidism.
Graves’ Disease is an autoimmune condition of the thyroid gland, resulting in an over production of thyroxine. The cause of the problem is the production of abnormal antibodies by the Immune system. These antibodies act in a similar way to TSH (Thyroid Stimulating Hormone), mimicking its function and causing the gland to produce excessive amounts of thyroxine.