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Young adults who had depression have 'hyper-connected' brain networks

Updated: Aug 27, 2014 02:24 PM
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(HealthDay News) -- Young adults who struggled with depression in adolescence appear to have "hyper-connected" networks in their brain, researchers are reporting.

The findings might improve understanding of depression and could lead to new ways to predict, prevent and treat the illness, according to the University of Illinois at Chicago researchers.

The researchers conducted brain scans on 30 volunteers, ages 18 to 23, who had depression in their teen years, and a control group of 23 young adults who never had depression.

Many regions of the brains in those with a history of depression were hyper-connected, which means they "communicate" with each other a bit too much. This hyper-connectivity was related to rumination, in which a person constantly thinks about a problem without actively attempting to find a solution.

"Rumination is not a very healthy way of processing emotion," study corresponding author Scott Langenecker, associate professor of psychiatry and psychology, said in a university news release. "Rumination is a risk factor for depression and for reoccurrence of depression if you've had it in the past."

The study was published online Aug. 27 in the journal PLoS One.

The researchers plan to follow the participants to determine if having hyper-connected brain networks predicts a recurrence of depression.

"If we can help youth learn how to shift out of maladaptive strategies, such as rumination, this may protect them from developing chronic depression and help them stay well as adults," study lead author Rachel Jacobs, a research assistant professor of psychiatry at UIC's Institute for Juvenile Research, said in the news release.

Added Langenecker: "We think that depression is a developmental outcome, and it's not a foregone conclusion that people need to become depressed. If we can provide prevention and treatment to those people that are most at risk, we might be able to prevent depression, reduce the number of depressive episodes, or reduce their severity."

More information

The National Alliance on Mental Illness has more about depression.

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