Below is an instruction from Human. Write a response.
    ### Instruction:
    What is (are) Diabetes, Heart Disease, and Stroke ?
    ### Response:
    Diabetes is a disorder of metabolismthe way our bodies use digested food for energy. Most of the food we eat is broken down into glucose, the form of sugar in the blood. Glucose is the body's main source of fuel.
                
After digestion, glucose enters the bloodstream.
    