Below is an instruction from Human. Write a response.
    ### Instruction:
    How many people are affected by breast cancer ?
    ### Response:
    Breast cancer is the second most commonly diagnosed cancer in women. (Only skin cancer is more common.) About one in eight women in the United States will develop invasive breast cancer in her lifetime. Researchers estimate that more than 230,000 new cases of invasive breast cancer will be diagnosed in U.
    