Causes

There are several causes of hyperthyroidism. Most often, the entire gland is overproducing thyroid hormone. This is called Graves' disease. Less commonly, a single nodule is responsible for the excess hormone secretion, called a 'Hot' nodule. Thyroiditis (inflammation of the thyroid) can also cause hyperthyroidism. Functional thyroid tissue producing an excess of thyroid hormone occurs in a number of clinical conditions.

Western Medical Scientists still don’t know the exactly mechanism of hyperthyroidism under modern Western Medication. So no one can tell the exactly cause of hyperthyroidism. According to Green Life experience, the major causes in humans are:

Heredity from parents or grandparents.

Drinking polluted water or eating polluted food.

The great mood change or stress from daily life.

Most of hyperthyroid patients caused by item 1 and 3.