Below is an instruction from Human. Write a response.
    ### Instruction:
    What is (are) Osteoporosis ?
    ### Response:
    Millions of Americans are able to lead healthy, productive lives while living with osteoporosis. If you have been feeling symptoms of depressionsuch as loss of appetite, hopelessness, feeling useless and helpless, or having thoughts of suicidefor more than 2 weeks, consult a doctor, social worker, or therapist.
    