You've probably heard of hoarders. There are plenty of TV shows about them these days. People whose homes are so cluttered with "stuff" that they can barely move around, let alone invite anyone over. What about the kids who grow up with hoarders? How does living with mountains of clutter affect behavioral element, and symptoms of hoarding can start as early as age 12. This is why experts say that children of hoarders need to talk to someone. There are all kinds of helpful support groups popping up online, like Children of Hoarders, Hoarder's Son, and Behind the Door.