Lisa Miller have a spiritual agenda.
Here is her TEDx talk about love and stuff: http://www.youtube.com/watch?v...
Also this study is in contradiction with this study:
Being Religious or Spiritual Is Linked With Getting More Depressed
From Lisa Miller:
"We previously reported a 90% decreased risk in major depression, assessed prospectively, in adult offspring of depressed probands who reported that religion or spirituality was highly important to them."
From Being Religious or Spiritual Is Linked With Getting More Depressed
"A key finding of the study, conducted in several different counties, is that a spiritual life view predisposed to major depression, especially significantly in the UK, where spiritual participants were nearly three times more likely to experience an episode of depression than the secular group."
Lisa Miller have first to explain this contradiction. Maybe some people get cortical thickness from religion, and some don't. I don't have access to Lisa's article.