Below is an instruction from Human. Write a response.
    ### Instruction:
    What causes Von Willebrand Disease ?
    ### Response:
    Von Willebrand disease (VWD) is almost always inherited. "Inherited" means that the disorder is passed from parents to children though genes. 
                
You can inherit type 1 or type 2 VWD if only one of your parents passes the gene on to you. You usually inherit type 3 VWD only if both of your parents pass the gene on to you.
    