Reply #1: Article continued...

[Gidney N Cloyd]

But as the Los Angeles Times points out, "none of those symptoms added up to a single diagnosis of a mental health disorder that could be linked with exposure to second-hand smoke in the children and teens in the study. "The study's authors themselves state that they were limited by their inability to control for psychiatric history, meaning, the fact that children with depressed mothers are more likely to have poor mental health.