Below is an instruction from Human. Write a response.
    ### Instruction:
    What is (are) glycogen storage disease type I ?
    ### Response:
    Glycogen storage disease type I (also known as GSDI or von Gierke disease) is an inherited disorder caused by the buildup of a complex sugar called glycogen in the body's cells. The accumulation of glycogen in certain organs and tissues, especially the liver, kidneys, and small intestines, impairs their ability to function normally.
    