Lead-based paint was banned in 1978, but houses built before then probably contain leaded paint. Children, particularly under the age of six, are most at risk from even small amounts of lead, and the damage can be permanent. But there are things you can do to protect your children. Read on to learn more about the symptoms and causes of lead poisoning, how to help prevent it, and testing children at 12 mos. and again at 24 mos. for exposure to lead in accordance with New York State law.