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Genetics make some people prone to depression

| | March 25, 2014

Why do some people sail through life’s difficulties, while others get mired in depression? A certain gene may explain such differences between people, a new study suggests.

Among the people in the study who had experienced highly stressful life events, those who had variants of the genes for a brain chemical called galanin were more likely to develop depression than those with similar experiences and normal galanin.

Galanin is a peptide widely found in the human nervous system, and is thought to be involved in regulating pain, waking and sleep, feeding, blood pressure and mood. A handful of studies have suggested that galanin has a role in stress and anxiety.

The findings suggest that brain’s galanin system plays a significant role in the development of depression by making people more vulnerable to psychological stress.

Read the full, original story: Mood Gene: What Makes Some People Prone to Depression

The GLP aggregated and excerpted this article to reflect the diversity of news, opinion, and analysis. Click the link above to read the full, original article.
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