Brain-imaging studies indicate that a thinning of the right
hemisphere of the brain may be linked to an increased risk of
depression. Writing in the Proceedings of the National Academy
of Sciences, researchers report that people at high risk of
developing depression had a 28 percent thinning of the right
cortex, the brainâs outermost surface, compared to people with
no known risk of depression. The thinning was not linked to
actual depression -- just an increased risk of developing
depression. Researchers said that the discovery that there was a
structural link in the cortex to depression was surprising, and
plan more imaging and genetic studies to expand on the finding.
We'll find out more. Produced by Annette Heist, Senior Producer