Below is an instruction from Human. Write a response.
    ### Instruction:
    What is (are) Coronary Heart Disease Risk Factors ?
    ### Response:
    Coronary heart disease risk factors are conditions or habits that raise your risk of coronary heart disease (CHD) and heart attack. These risk factors also increase the chance that existing CHD will worsen.
                
CHD, also called coronary artery disease, is a condition in which a waxy substance called plaque (plak) builds up on the inner walls of the coronary arteries.
    