Below is an instruction from Human. Write a response.
    ### Instruction:
    What causes What I need to know about Diarrhea ?
    ### Response:
    Causes of diarrhea include
                
- bacteria from contaminated food or water  - viruses that cause illnesses such as the flu  - parasites, which are tiny organisms found in contaminated food or water  - medicines such as antibiotics  - problems digesting certain foods  - diseases that affect the stomach, small intestine, or colon, such as Crohns disease  - problems with how the colon functions, caused by disorders such as irritable bowel syndrome

    