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Hallberg's Picture of Health: The dangers of lead

Louis Singleton receives water filters, bottled water and a test kit from Michigan National Guard Spc. Joe Weaver as clean water supplies are distributed to residents on Jan. 21 in Flint, Mich. 

As the Flint water crisis continues, MPR News' regular medical analyst Dr. Jon Hallberg answered some questions on what lead can do to the body, and why it's worse for children and developing bodies.