Below is an instruction from Human. Write a response.
    ### Instruction:
    What is (are) ataxia with vitamin E deficiency ?
    ### Response:
    Ataxia with vitamin E deficiency is a disorder that impairs the body's ability to use vitamin E obtained from the diet. Vitamin E is an antioxidant, which means that it protects cells in the body from the damaging effects of unstable molecules called free radicals.
    