Below is an instruction from Human. Write a response.
    ### Instruction:
    What is (are) Lead Poisoning ?
    ### Response:
    Lead is a metal that occurs naturally in the earth's crust. Lead can be found in all parts of our environment. Much of it comes from human activities such as mining and manufacturing. Lead used to be in paint; older houses may still have lead paint. You could be exposed to lead by       - Eating food or drinking water that contains lead.
    