Below is an instruction from Human. Write a response.
    ### Instruction:
    What is (are) Hyperthyroidism ?
    ### Response:
    The thyroid is a 2-inch-long, butterfly-shaped gland weighing less than 1 ounce. Located in the front of the neck below the larynx, or voice box, it has two lobes, one on each side of the windpipe. The thyroid is one of the glands that make up the endocrine system.
    