Friday, March 16

Social Stress May Kill Off New Brain Cells

WEDNESDAY, March 14 (HealthDay News) -- Research in rats shows that a single, socially stressful situation may contribute to depression by killing new nerve cells in the hippocampus, the area of the brain that processes learning, memory and emotion.
In young rats, the stress of encountering older, aggressive rats didn't stop the creation of new brain nerve cells, the first step in a process called neurogenesis. However, this form of stress did prevent many new nerve cells from surviving, which left the young rats with fewer neurons for processing feelings and emotions.
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