There may be several causes for depression, of which stress is just one of the major one. So a new study has pointed that faulty immune system is yet another cause for depression.
Scientists have found that depression is a physical illness caused by a faulty immune system that may be treated using anti-drugs. Current treatments for depression focus on restoring serotonin and other mood-boosting chemicals in the brain.
Researchers from the University of Cambridge in the UK have found that an overactive immune system triggers inflammation throughout the entire body, sparking feelings of hopelessness, unhappiness and fatigue.
It may be a symptom of the immune system failing to switch off after a trauma or illness, and is similar to the low mood people often experienced when they are fighting a virus, like flu.
Recent studies and clinical trials have shown that treating inflammation seems to alleviate depression, researchers said. "It is pretty clear that inflammation can cause depression," said Ed Bullmore, professor at University of Cambridge.
"In relation to mood, beyond reasonable doubt, there is a very robust association between inflammation and depressive symptoms," Bullmore was quoted as saying by The Telegraph.
Scientists at Cambridge and the Wellcome Trust are hoping to begin trials next year to test whether anti-inflammatory drugs could switch off depression.
The immune system triggers an inflammatory response when it feels it is under threat, sparking wide-ranging changes in the body such as increasing red blood cells.
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