Below is an instruction from Human. Write a response.
    ### Instruction:
    Who is at risk for Heart Failure? ?
    ### Response:
    About 5.7 million people in the United States have heart failure. The number of people who have this condition is growing.
                
Heart failure is more common in:
                
People who are age 65 or older. Aging can weaken the heart muscle. Older people also may have had diseases for many years that led to heart failure.
    